NCERT Solutions for Class 1 Mathematics (Joyful Mathematics & Math-Magic Book 1) CBSE 2026-27

Unit 1: Joyful Numbers • Class 1 Mathematics

Chapter 1: Finding the Furry Cat

Pre-Number Concepts, Spatial Vocabulary & Orientation

Chapter Highlights, Key Concepts & Visual Models

Inside and Outside: recognizing objects within boundaries vs outside.
Top and Bottom: identifying highest and lowest positions.
Nearer and Farther: comparing relative distances from a reference point.
On and Under, Above and Below: positional relationships.
Bigger and Smaller: comparing physical sizes visually.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (16 Solved Questions)

Q1 Look at the picture in the book: The furry cat is sitting in a cardboard basket. Where is the cat — inside the basket or outside? Textbook Exercise • Inside & Outside 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. The cat's entire body is enclosed within the four walls of the basket.
2. Therefore, the cat is inside the basket.
3. If the cat hops out onto the carpet, it will be outside the basket.

CBSE Step-by-Step Marking Scheme

Identified 'inside' 1 M

Clear spatial explanation 1 M

Q2 A little bird sits on the highest branch of a guava tree, while a snail is on the grass at the foot of the tree. Tick the animal at the top. Textbook Exercise • Top & Bottom 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Top: The bird is at the top of the tree because it is perched on the uppermost branch.
• Bottom: The snail is at the bottom of the tree on the ground.

CBSE Step-by-Step Marking Scheme

Bird is at the top 1 M

Snail is at the bottom 1 M

Q3 Two mice are running toward a hole in the kitchen wall. Mouse Chintu is 2 steps away from the hole. Mouse Pintu is 8 steps away. Who is nearer to the hole? Let Us Do • Nearer & Farther 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Compare the distances: 2 steps is less than 8 steps.
2. Nearer: Mouse Chintu is nearer to the hole.
3. Farther: Mouse Pintu is farther from the hole.

CBSE Step-by-Step Marking Scheme

Chintu is nearer 1 M

Distance comparison stated 1 M

Q4 Tick (✓) the bigger animal between an elephant and a goat. Cross (✗) the smaller animal. Let Us Do • Bigger & Smaller 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Elephant: Tick (✓) — the elephant has a huge body, so it is bigger.
• Goat: Cross (✗) — compared to the elephant, the goat is smaller.

CBSE Step-by-Step Marking Scheme

Elephant ticked as bigger 1 M

Goat crossed as smaller 1 M

Q5 A water bottle is kept on the study table. A red football is lying on the floor under the table. Describe their positions using 'on' and 'under'. In-Text Prompt • On & Under 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The water bottle is on the table (resting on the upper flat surface).
• The red football is under the table (resting on the floor beneath the table).

CBSE Step-by-Step Marking Scheme

Bottle is on the table 1 M

Football is under the table 1 M

Q6 A ceiling fan hangs overhead. A soft rug is spread on the floor. Which object is above the bed and which is below? Let Us Think • Above & Below 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Above: The ceiling fan is above the bed (higher up in the air).
• Below: The rug is on the floor below the bed level.

CBSE Step-by-Step Marking Scheme

Fan is above 1 M

Rug is below 1 M

Q7 Look at two footprints left on the wet river sand: one is a tiny sparrow claw mark and the other is a large camel hoof print. Which print is bigger? Let Us Do • Footprints in Sand 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Large animals have broad feet to walk on sand.
2. Therefore, the camel's hoof print is bigger.
3. The sparrow's claw mark is smaller.

CBSE Step-by-Step Marking Scheme

Camel print is bigger 1 M

Sparrow print is smaller 1 M

Q8 The furry cat jumped: first behind the blue curtain, then into the wooden drawer, and finally under the quilt. Match each place to its position word. Picture Story • Where Did the Cat Go? 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Blue curtain → Behind
• Wooden drawer → Inside
• Quilt → Under

CBSE Step-by-Step Marking Scheme

Behind the curtain 1 M

Inside the drawer 1 M

Under the quilt 1 M

Q9 Riya collected a banana leaf and a neem leaf from the garden. Which leaf is bigger and which is smaller? Let Us Do • Sorting Big and Small Leaves 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The banana leaf is bigger (it is broad and very long).
• The neem leaf is smaller (it is tiny and narrow).

CBSE Step-by-Step Marking Scheme

Banana leaf is bigger 1 M

Neem leaf is smaller 1 M

Q10 In the classroom, Aman sits on Bench 1 right next to the entrance door. Kabir sits on Bench 5 at the back. Who is nearest to the door? Let Us Think • Nearest to the Door 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Aman sits on Bench 1 right beside the entrance, so Aman is nearest to the door.
• Kabir is farthest from the door.

CBSE Step-by-Step Marking Scheme

Aman is nearest 1 M

Reason based on distance 1 M

Q11 During the morning school prayer line, Meera stands in front of Rohan. Who is at the front and who is at the back? In-Text Activity • Front and Back 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Front: Meera is at the front.
• Back: Rohan is at the back, behind Meera.

CBSE Step-by-Step Marking Scheme

Meera is at the front 1 M

Rohan is at the back 1 M

Q12 Two swings are moving in the park. Swing A goes high up towards the tree branches. Swing B stays low near the grass. Which swing is higher? Let Us Do • High and Low Swings 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Swing A is higher because it reaches up towards the tree branches.
• Swing B is lower.

CBSE Step-by-Step Marking Scheme

Swing A is higher 1 M

Swing B is lower 1 M

Q13 When packing your school bag, do you put books in before zipping the bag or after zipping the bag? Let Us Think • Before and After 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• You must put your books inside before zipping the bag.
• Zipping the bag comes after all items are safely packed.

CBSE Step-by-Step Marking Scheme

Books before zipping 1 M

Correct temporal sequence 1 M

Q14 Look at three fruits: a watermelon, an apple, and a grape. Which fruit is the biggest, and which is the smallest? Observation Task • Biggest and Smallest 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Biggest fruit: Watermelon.
• Smallest fruit: Grape.
• The apple is medium-sized (between watermelon and grape).

CBSE Step-by-Step Marking Scheme

Watermelon is biggest 1 M

Grape is smallest 1 M

Q15 Describe where the furry cat is sitting if its paws are resting on the brick wall under the open sky. Drawing & Matching • Cat on the Wall 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The cat is sitting on the wall.
• The open blue sky is above the cat.

CBSE Step-by-Step Marking Scheme

Cat is on the wall 1 M

Sky is above the cat 1 M

Q16 Look around your bedroom. Name one thing that is inside your cupboard, one thing on your bed, and one thing under your bed. Competency Summary • Room Orientation 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Inside cupboard: Clothes / school uniform.
• On bed: Pillow / bedsheet.
• Under bed: Slippers / storage box.

CBSE Step-by-Step Marking Scheme

Inside example 1 M

On example 1 M

Under example 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Hiding in the Playroom Case Study

Real-World Context: Aarav is playing hide-and-seek with his furry kitten, Mitu. Aarav looks under the bed, inside the toy trunk, and on top of the study bookshelf.

Analytical Task: If Mitu is found inside the trunk, what spatial position does this represent? Where would Aarav look if Mitu were sleeping on a flat elevated surface?

1. Finding Mitu inside the trunk represents the 'Inside' position (enclosed by container walls).
2. For a flat elevated surface, Aarav should look 'On' the study bookshelf or on top of the bed.

CBSE Assessment Rubric: 1.5 M for 'Inside' concept + 1.5 M for 'On' concept

Unit 1: Joyful Numbers • Class 1 Mathematics

Chapter 2: What is Long? What is Round?

2D & 3D Shapes, Rolling, Sliding & Surface Properties

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Identifying round objects (spheres, balls, fruits) vs long objects (pencils, bats, rulers).
Rolling and Sliding: curved surfaces roll, flat surfaces slide.
Objects that both roll and slide (coins, cylindrical pipes, cans).
Tower making: flat surfaces stack securely, curved surfaces fall.
Tracing flat faces of 3D objects to discover 2D shapes (circles, rectangles, squares).

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (16 Solved Questions)

Q1 Name two objects from your daily life that are 'Long' and two objects that are 'Round'. Textbook Exercise • What is Long, What is Round? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Long objects: Cricket bat, Writing pencil, Ruler.
• Round objects: Cricket ball, Orange, Tomato, Bangle.

CBSE Step-by-Step Marking Scheme

Two correct long objects 1 M

Two correct round objects 1 M

Q2 In Uncle Golu's blindfold game, an object feels smooth, has no corners, and rolls easily in your hands. What is its shape? Textbook Exercise • Blindfold Guessing Game 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. An object with no flat corners that rolls in all directions is round (spherical).
2. Example: A tennis ball, marble, or laddoo.

CBSE Step-by-Step Marking Scheme

Identified as round / sphere 1 M

Valid real-life example 1 M

Q3 Classify these 4 objects into 'Rolls' or 'Slides': (a) A glass marble, (b) An eraser, (c) A tomato, (d) A flat wooden ruler. Let Us Do • Rolling vs Sliding 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Rolls: Glass marble and Tomato (curved surfaces).
• Slides: Eraser and Flat wooden ruler (flat surfaces).

CBSE Step-by-Step Marking Scheme

Marble & tomato = Rolls 1 M

Eraser & ruler = Slides 1 M

Q4 How can a ₹5 coin both roll and slide? Explain by describing its two positions. Let Us Think • Both Rolls and Slides 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Slides: Place the coin flat on the table and push it. Its flat circular face slides.
• Rolls: Stand the coin upright on its thin curved edge and gently push. It rolls like a wheel.

CBSE Step-by-Step Marking Scheme

Flat face slides 1.5 M

Curved edge rolls 1.5 M

Q5 Can you build a stable tower using round footballs? Why or why not? What objects make good towers? Hands-on Construction • Making Towers 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. No, footballs cannot make a tower because their curved round bodies roll off each other.
2. Objects with flat faces like wooden blocks, books, and matchboxes make stable towers.

CBSE Step-by-Step Marking Scheme

Footballs cannot stack because round 1.5 M

Flat objects make stable towers 1.5 M

Q6 Spin a 1-rupee coin on a smooth table like a top. What does the spinning coin look like? Let Us Do • Coin Spinning Trick 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• When a flat round coin spins very fast on its edge, it looks like a round ball (sphere).
• When it stops spinning, it falls flat again.

CBSE Step-by-Step Marking Scheme

Looks like a round ball / sphere 1 M

Understands spinning illusion 1 M

Q7 Keep a matchbox flat on paper and trace its border with a pencil. What flat shape do you get? Shape Tracing • Matchbox Outline 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The face of a matchbox has 4 straight sides (opposite sides equal).
• Tracing its border gives a Rectangle.

CBSE Step-by-Step Marking Scheme

Identified Rectangle 1 M

Mentions 4 straight sides 1 M

Q8 Keep a round glass bangle flat on a sheet of paper and draw along its edge. What 2D shape is formed? Shape Tracing • Bangle Outline 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The bangle has a curved circular rim.
• Tracing inside or outside the rim gives a Circle.

CBSE Step-by-Step Marking Scheme

Identified Circle 1 M

Recognized curved border 1 M

Q9 Look at a cylindrical glue stick. Does it roll, slide, or do both? Let Us Think • Can It Roll? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• A glue stick has a curved round side and flat circular ends.
• Therefore, it both rolls (on its curved side) and slides (on its flat base).

CBSE Step-by-Step Marking Scheme

Both rolls and slides 1 M

Explains curved side vs flat end 1 M

Q10 Look at: Carrot, Onion, Cucumber, Lemon, Potato. Which are long and which are round? Let Us Do • Sorting Vegetables 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Long vegetables: Carrot, Cucumber.
• Round vegetables: Onion, Lemon, Potato (mostly round/oval).

CBSE Step-by-Step Marking Scheme

Long identified 1 M

Round identified 1 M

Q11 Does a cricket ball have any sharp corners? How many corners does a square chessboard have? In-Text Prompt • Corner Counting 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• A cricket ball has 0 corners (it is completely round).
• A square chessboard has 4 sharp corners.

CBSE Step-by-Step Marking Scheme

Cricket ball = 0 corners 1 M

Chessboard = 4 corners 1 M

Q12 Can you stack hollow cardboard toilet-paper rolls to build a tower? How should they be placed? Let Us Do • Cardboard Pipe Challenge 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Yes, if placed standing upright on their flat circular rims, they stack into a stable tower.
• If laid on their curved sides, they roll and cannot stack.

CBSE Step-by-Step Marking Scheme

Yes, by standing on flat circular rims 1 M

Curved sides roll 1 M

Q13 Why are wheels of bicycles, cars, and buses always round and never square? Let Us Think • Wheels of a Vehicle 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Round wheels roll smoothly without bumpy stops.
2. Square wheels have 4 corners that would hit the ground and prevent smooth rolling.

CBSE Step-by-Step Marking Scheme

Round wheels roll smoothly 1 M

Square corners prevent rolling 1 M

Q14 Can a thin paper postcard stand upright on a table? How can you fold or roll it so it can hold a book on top? Activity • Postcard Tower 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. A flat postcard bends easily.
2. But if you roll the postcard into a round cylinder (pipe) and tape the ends, it can stand upright and hold a heavy book on top!

CBSE Step-by-Step Marking Scheme

Roll into a cylinder / pipe 1 M

Tape ends to make strong column 1 M

Q15 Match the 3D object to its flat face trace: (a) Dice, (b) Water glass bottom, (c) Matchbox side. Observation • Match the Pairs 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Dice → Square
• (b) Water glass bottom → Circle
• (c) Matchbox side → Rectangle

CBSE Step-by-Step Marking Scheme

Dice = Square 1 M

Glass = Circle 1 M

Matchbox = Rectangle 1 M

Q16 Write 'R' for Rolls, 'S' for Slides, and 'B' for Both: (1) Football, (2) Notebook, (3) Candle, (4) Orange. Summary Drill • Rolls or Slides Summary 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Football → R (Rolls)
2. Notebook → S (Slides)
3. Candle → B (Both)
4. Orange → R (Rolls)

CBSE Step-by-Step Marking Scheme

All 4 classified correctly 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Playground Slide Experiment

Real-World Context: During sports period, Ravi slides his plastic lunchbox down the playground slide, while Priya rolls an orange down the same slide.

Analytical Task: Why does the orange roll while the lunchbox slides? What happens if you push a ₹5 coin down the slide?

1. The orange has a curved round surface with no flat faces, so it rolls.
2. The lunchbox has flat faces, so it slides.
3. A ₹5 coin can both slide (if placed flat on its face) and roll (if stood upright on its circular edge).

CBSE Assessment Rubric: 1.5 M for surface explanation + 1.5 M for coin behavior

Unit 2: Number Operations • Class 1 Mathematics

Chapter 3: Mango Treat

Counting 1 to 9, As Many As, More or Less, Zero Concept

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Counting physical objects from 1 to 9 with one-to-one correspondence.
Comparing quantities: As Many As, More, and Less.
Concept of Zero as an empty collection or none left.
Number names (One to Nine) and numeral writing.
Missing numbers on a number track and ordering.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (18 Solved Questions)

Q1 There are 5 hungry rabbits and 5 crunchy carrots. Draw lines to match each rabbit to a carrot. Is there a carrot for every rabbit? Textbook Exercise • As Many As 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Count of rabbits = 5.
2. Count of carrots = 5.
3. Since 5 equals 5, there are as many carrots as rabbits. Every rabbit gets exactly 1 carrot without any left over.

CBSE Step-by-Step Marking Scheme

Matched 5 rabbits to 5 carrots 1 M

Used 'as many as' accurately 1 M

Q2 Group A has 7 butterflies. Group B has 4 butterflies. Tick (✓) the group that has MORE butterflies. Textbook Exercise • More or Less 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Count of Group A = 7
• Count of Group B = 4
• Comparing: 7 is greater than 4 (7 > 4).
• Therefore, Group A has more butterflies.

CBSE Step-by-Step Marking Scheme

Group A ticked 1 M

Comparison 7 > 4 stated 1 M

Q3 Look at the mango tree: 6 ripe yellow mangoes are hanging on the tree, and 3 mangoes have fallen on the ground. How many mangoes are on the tree? Textbook Exercise • Counting Mangoes 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Count of mangoes hanging on the tree = 6 mangoes.
• Count of fallen mangoes = 3 mangoes.
• Total mangoes = 6 + 3 = 9 mangoes.

CBSE Step-by-Step Marking Scheme

6 mangoes on the tree 1 M

Total count of 9 noted 1 M

Q4 Match the objects to their correct numeral: (a) 3 Bananas, (b) 5 Marbles, (c) 8 Leaves, (d) 1 Sun. Textbook Exercise • Count and Match 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 3 Bananas → 3
• (b) 5 Marbles → 5
• (c) 8 Leaves → 8
• (d) 1 Sun → 1

CBSE Step-by-Step Marking Scheme

All 4 numerals correctly matched 2 M

Q5 There are 4 little green parrots sitting on a branch. One by one, all 4 parrots fly away into the sky. How many parrots are on the branch now? Textbook Exercise • Concept of Zero 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Starting parrots = 4
2. Parrots that flew away = 4
3. Remaining parrots = 4 - 4 = 0 (Zero).
4. Zero means none is left on the branch.

CBSE Step-by-Step Marking Scheme

4 - 4 = 0 1 M

Zero explained as none left 1 M

Q6 One little parrot green singing cheep, cheep, cheep; one more joins in, making them: ___. Let Us Do • One More Parrot Rhyme 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Starting parrots = 1
• One more joins: 1 + 1 = 2 parrots (Two).

CBSE Step-by-Step Marking Scheme

1 + 1 = 2 1 M

Number name 'Two' 1 M

Q7 Write the number name for: (a) 4, (b) 7, (c) 9, (d) 2. Let Us Do • Number Names 1 to 9 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 = Four
• 7 = Seven
• 9 = Nine
• 2 = Two

CBSE Step-by-Step Marking Scheme

All 4 number names spelled correctly 2 M

Q8 Fill the missing numbers on the train wagons: 1, 2, __, 4, __, 6, 7, __, 9. Let Us Think • Number Train Missing Wagons 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
Counting from 1 to 9 in sequential order:
1, 2, 3, 4, 5, 6, 7, 8, 9.

CBSE Step-by-Step Marking Scheme

Filled in 3, 5, 8 correctly 2 M

Q9 What number comes: (a) Just before 6? (b) Just after 7? (c) Between 4 and 6? Textbook Exercise • What Comes Before & After? 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Just before 6 is 5.
• (b) Just after 7 is 8.
• (c) Between 4 and 6 is 5.

CBSE Step-by-Step Marking Scheme

Before 6 = 5 1 M

After 7 = 8 1 M

Between 4 and 6 = 5 1 M

Q10 A ladybug has 4 black dots on its left wing and 5 black dots on its right wing. How many dots does the ladybug have altogether? Let Us Do • Dot Pattern Pairing 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Left wing dots = 4
• Right wing dots = 5
• Total dots = 4 + 5 = 9 dots.

CBSE Step-by-Step Marking Scheme

Addition 4 + 5 1 M

Answer: 9 dots 1 M

Q11 Show 5 fingers on your left hand. How many fingers must you show on your right hand to make 7 fingers in total? In-Text Prompt • Finger Counting 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Starting with 5 fingers.
2. Count on: 6 (one finger), 7 (two fingers).
3. You must show 2 fingers on the right hand (5 + 2 = 7).

CBSE Step-by-Step Marking Scheme

Counting forward by 2 1 M

Answer: 2 fingers 1 M

Q12 Set X has 8 blue beads. Set Y has 6 red beads. Circle the set with more beads. Textbook Exercise • Circling More Objects 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 8 is more than 6.
• Circle Set X (8 blue beads).

CBSE Step-by-Step Marking Scheme

Set X circled 1 M

8 > 6 reasoning 1 M

Q13 There are 8 balloons in the sky. Draw a circle around a group of 4 balloons. How many balloons are outside the circle? Let Us Do • Make Groups of 4 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Total balloons = 8
• Group circled = 4
• Balloons outside the circle = 8 - 4 = 4 balloons.

CBSE Step-by-Step Marking Scheme

Group of 4 circled 1 M

4 remaining calculated 1 M

Q14 Plate 1 has 3 laddoos. Plate 2 has 0 laddoos. Which plate is empty? Textbook Exercise • Empty Plates 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Plate 2 has 0 laddoos, which means it has no laddoos at all.
• Therefore, Plate 2 is empty.

CBSE Step-by-Step Marking Scheme

Plate 2 is empty 1 M

0 means empty 1 M

Q15 Count backward from 5 to 1: 5, 4, 3, __, __. Let Us Think • Counting Backward 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
Counting backward by subtracting 1 each time:
5, 4, 3, 2, 1.

CBSE Step-by-Step Marking Scheme

Filled in 2 and 1 2 M

Q16 Which is the greatest number among 3, 9, and 6? Which is the smallest? Competency Drill • Comparing Three Numbers 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Comparing: 3 < 6 < 9.
• Greatest number: 9.
• Smallest number: 3.

CBSE Step-by-Step Marking Scheme

Greatest = 9 1 M

Smallest = 3 1 M

Q17 Two sparrows are on a fence. Three more fly down and join them. How many sparrows are on the fence? Word Problem • Sparrows on a Fence 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Initial sparrows = 2
• Sparrows joining = 3
• Total = 2 + 3 = 5 sparrows.

CBSE Step-by-Step Marking Scheme

Addition 2 + 3 = 5 1 M

Answer with unit: 5 sparrows 1 M

Q18 Draw lines: 6 to (••••••), 3 to (•••), 8 to (••••••••). Activity • Match Numeral to Dots 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 matches the group of 6 dots.
• 3 matches the group of 3 dots.
• 8 matches the group of 8 dots.

CBSE Step-by-Step Marking Scheme

Correct one-to-one matching 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Orchard Mango Harvest Case Study

Real-World Context: Grandpa gives Anaya 5 ripe yellow mangoes and gives Kabir 3 ripe yellow mangoes in cane baskets.

Analytical Task: Who has more mangoes and by how many? If Anaya eats all 5 of her mangoes, how many mangoes remain in her basket?

1. Anaya has 5 and Kabir has 3. Since 5 > 3, Anaya has more mangoes.
2. Difference = 5 - 3 = 2 more mangoes.
3. If Anaya eats all 5, her basket has 5 - 5 = 0 (Zero) mangoes left.

CBSE Assessment Rubric: 1 M for comparison + 1 M for difference + 1 M for zero calculation

Unit 2: Number Operations • Class 1 Mathematics

Chapter 4: Making 10

Combinations of 10, Ten-Frames, Bundling & Tens/Ones

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Understanding 10 as a group of ten ones (1 ten = 10 ones).
Using ten-frames to discover number pairs that sum to 10 (e.g. 1+9, 2+8, 5+5).
Bundling loose sticks into packets/bundles of 10.
Numbers from 10 to 20: 10 and 1 is 11, 10 and 2 is 12, up to 20.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (17 Solved Questions)

Q1 Look at the 10-frame: 7 boxes have red counters. How many empty boxes are left to make 10? Textbook Exercise • Ten-Frame Pairs 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Total boxes in a ten-frame = 10.
2. Filled boxes = 7.
3. Empty boxes = 10 - 7 = 3 empty boxes.
4. Therefore, 7 + 3 = 10.

CBSE Step-by-Step Marking Scheme

10 - 7 = 3 1 M

Pair: 7 and 3 make 10 1 M

Q2 Hold up all the fingers of both hands. How many fingers do you have in total? If you fold 4 fingers down, how many stay upright? Let Us Do • Finger Counting to 10 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Total fingers on both hands = 5 + 5 = 10 fingers.
• Fold 4 fingers down: 10 - 4 = 6 fingers upright.

CBSE Step-by-Step Marking Scheme

Total 10 fingers 1 M

6 upright (10 - 4 = 6) 1 M

Q3 Fill in the blanks to make 10:
(a) 1 + __ = 10
(b) 2 + __ = 10
(c) 5 + __ = 10
(d) 8 + __ = 10 Textbook Exercise • Pairs that Make 10 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 1 + 9 = 10
• (b) 2 + 8 = 10
• (c) 5 + 5 = 10
• (d) 8 + 2 = 10

CBSE Step-by-Step Marking Scheme

All 4 pairs filled correctly 2 M

Q4 Rohan has 10 loose matchsticks. He ties them together with a rubber band. What do we call this tied bundle in mathematics? Hands-on Activity • Bundling Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• A bundle of 10 loose ones is called 1 Ten (One Ten = 10 Ones).
• This forms the foundation of the place-value system.

CBSE Step-by-Step Marking Scheme

Called 1 Ten 1 M

1 Ten = 10 Ones 1 M

Q5 A bundle of 10 pencils and 3 loose pencils makes what number? Write the numeral and number name. Textbook Exercise • Numbers 10 to 20 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 1 bundle of 10 = 10
• 3 loose pencils = 3
• 10 + 3 = 13.
• Number name: Thirteen.

CBSE Step-by-Step Marking Scheme

Numeral 13 1 M

Number name Thirteen 1 M

Q6 Write the number for:
(a) 10 and 1
(b) 10 and 5
(c) 10 and 7
(d) 10 and 10 Let Us Do • 10 and More 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 10 and 1 = 11 (Eleven)
• (b) 10 and 5 = 15 (Fifteen)
• (c) 10 and 7 = 17 (Seventeen)
• (d) 10 and 10 = 20 (Twenty)

CBSE Step-by-Step Marking Scheme

All 4 numbers correct 2 M

Q7 Look at 14 ice cream cones. Circle a group of 10 cones. How many cones are left outside the circle? Textbook Exercise • Circle Groups of 10 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Total cones = 14.
2. Circle 10 cones (1 group of 10).
3. Cones left outside = 14 - 10 = 4 loose cones.
4. 14 = 1 Ten and 4 Ones.

CBSE Step-by-Step Marking Scheme

Circled 10 cones 1 M

4 loose cones remaining 1 M

Q8 If you have 6 blue marbles, how many yellow marbles must you add to make a full bowl of 10 marbles? Let Us Think • Number 10 Rainbow Pair 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Blue marbles = 6
• Total needed = 10
• Yellow marbles = 10 - 6 = 4 yellow marbles.

CBSE Step-by-Step Marking Scheme

10 - 6 = 4 1 M

Answer: 4 yellow marbles 1 M

Q9 Fill in Tens and Ones for: (a) 18, (b) 12. Textbook Exercise • Tens and Ones Table 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 18 = 1 Ten and 8 Ones
• (b) 12 = 1 Ten and 2 Ones

CBSE Step-by-Step Marking Scheme

18 = 1 Ten, 8 Ones 1 M

12 = 1 Ten, 2 Ones 1 M

Q10 Fill the missing numbers: 10, 11, __, 13, __, 15, 16, __, 18, 19, 20. Let Us Do • Number Strip 10 to 20 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
Counting from 10 to 20 sequentially:
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20.

CBSE Step-by-Step Marking Scheme

Filled 12, 14, 17 correctly 2 M

Q11 Circle the greater number in each pair: (a) 11 and 16, (b) 19 and 15. Textbook Exercise • Greater and Smaller in Teens 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 16 is greater than 11 → Circle 16.
• (b) 19 is greater than 15 → Circle 19.

CBSE Step-by-Step Marking Scheme

16 circled 1 M

19 circled 1 M

Q12 An egg tray holds 10 eggs. Farmer Ali placed 10 eggs in the tray and kept 6 extra eggs in a basket. How many eggs does he have in total? Word Problem • Eggs in a Carton 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Eggs in tray = 10 (1 ten)
• Extra eggs = 6 (6 ones)
• Total eggs = 10 + 6 = 16 eggs.

CBSE Step-by-Step Marking Scheme

10 + 6 = 16 1 M

Answer with unit: 16 eggs 1 M

Q13 How many tens make the number 20? How many bundles of 10 matchsticks would you tie? Let Us Think • How Many Ones in 20? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 10 + 10 = 20.
• Therefore, 2 tens make 20.
• You would tie 2 bundles of 10 matchsticks with 0 loose ones.

CBSE Step-by-Step Marking Scheme

2 tens make 20 1 M

2 bundles tied 1 M

Q14 What number comes just before 15? What number comes just after 19? Textbook Exercise • What Comes Just After 19? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Just before 15 is 14.
• Just after 19 is 20.

CBSE Step-by-Step Marking Scheme

Before 15 = 14 1 M

After 19 = 20 1 M

Q15 Match: (1) Full 10-frame and 2 dots → 12. (2) Full 10-frame and 5 dots → 15. Activity • Match Numeral to Ten-Frame 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 10 + 2 = 12
• 10 + 5 = 15

CBSE Step-by-Step Marking Scheme

Correct matches verified 2 M

Q16 Find the smallest number among: 13, 17, 10, 15. Competency Drill • Smallest in the Group 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Comparing: 10 < 13 < 15 < 17.
• The smallest number is 10.

CBSE Step-by-Step Marking Scheme

Identified 10 as smallest 2 M

Q17 Draw a necklace with 10 beads: color 5 red and 5 green. Does 5 + 5 equal 10? Let Us Do • Bead String of 10 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Yes, 5 red beads + 5 green beads = 10 beads.
• 5 and 5 are doubles that make 10.

CBSE Step-by-Step Marking Scheme

5 + 5 = 10 1 M

Recognized equal doubles 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Making Bead Garlands Case Study

Real-World Context: Simran wants to make a necklace of 10 red beads. She already has 6 red beads on her string.

Analytical Task: How many more beads does Simran need to complete her necklace of 10? If her friend gives her 8 beads, can they make another complete garland of 10?

1. Total beads needed = 10. Beads currently on string = 6.
2. More beads needed = 10 - 6 = 4 more beads.
3. With 8 beads, they cannot make a full garland of 10 because 8 is less than 10 (needs 2 more).

CBSE Assessment Rubric: 1.5 M for 10 - 6 = 4 beads + 1.5 M for 8 < 10 analysis

Unit 2: Number Operations • Class 1 Mathematics

Chapter 5: How Many?

Addition & Subtraction within 10, Word Problems & Story Contexts

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Combining two collections to find 'How many altogether?' (Addition).
Taking away items from a group to find 'How many left?' (Subtraction).
Using fingers, dot cards, and pictures for addition facts.
Properties of Zero in addition and subtraction (adding 0 gives same number).
Solving simple everyday addition and subtraction story problems.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (19 Solved Questions)

Q1 Rohan has 3 red roses in his hand. Maya gives him 2 yellow roses. How many roses does Rohan have altogether? Textbook Exercise • Adding Flowers 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Red roses = 3
2. Yellow roses = 2
3. Total roses = 3 + 2 = 5 roses altogether.

CBSE Step-by-Step Marking Scheme

Addition expression 3 + 2 1 M

Answer: 5 roses 1 M

Q2 A balloon seller held 6 colorful balloons. 2 balloons popped with a bang. How many balloons are left? Textbook Exercise • Taking Away Balloons 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Initial balloons = 6
2. Popped balloons = 2
3. Balloons left = 6 - 2 = 4 balloons.

CBSE Step-by-Step Marking Scheme

Subtraction expression 6 - 2 1 M

Answer: 4 balloons 1 M

Q3 Look at the pond picture: 5 frogs are sitting on water lily pads. 2 more frogs jump out of the water onto the pads. How many frogs in all? Let Us Do • Frogs on Water Lilies 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Frogs on pads = 5
• New frogs joining = 2
• Total frogs = 5 + 2 = 7 frogs.

CBSE Step-by-Step Marking Scheme

5 + 2 = 7 1 M

Correct total with unit 1 M

Q4 A fruit plate has 4 sweet bananas. No more bananas were added (0 bananas added). How many bananas are on the plate? Textbook Exercise • Adding Zero 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 + 0 = 4 bananas.
• Adding zero to any number leaves the number unchanged.

CBSE Step-by-Step Marking Scheme

4 + 0 = 4 1 M

Property of zero explained 1 M

Q5 Ankit had 5 toy cars. He did not give any car to his brother (gave 0 cars). How many toy cars does Ankit still have? Textbook Exercise • Subtracting Zero 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 - 0 = 5 toy cars.
• Subtracting zero does not decrease the collection.

CBSE Step-by-Step Marking Scheme

5 - 0 = 5 1 M

Property of zero in subtraction 1 M

Q6 Write three different addition pairs that equal 6. Let Us Do • Addition Facts of 6 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 1 + 5 = 6
• 2 + 4 = 6
• 3 + 3 = 6 (also 0 + 6 = 6).

CBSE Step-by-Step Marking Scheme

Three valid pairs provided 2 M

Q7 7 sparrows were resting on an electric wire. 3 sparrows flew away to catch insects. How many sparrows remained on the wire? Textbook Exercise • Sparrows on a Wire 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Initial sparrows = 7
• Sparrows that flew away = 3
• Sparrows left = 7 - 3 = 4 sparrows.

CBSE Step-by-Step Marking Scheme

7 - 3 = 4 1 M

Answer: 4 sparrows 1 M

Q8 Start at number 4 on the number line. Take 3 hops forward. Where do you land? Let Us Think • Number Line Addition 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Starting point = 4
• Jump 3 forward: 4 → 5 → 6 → 7.
• You land on 7 (4 + 3 = 7).

CBSE Step-by-Step Marking Scheme

Shows 3 forward hops 1 M

Lands on 7 1 M

Q9 Start at number 8 on the number line. Take 3 hops backward. Where do you land? Let Us Think • Number Line Subtraction 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Starting point = 8
• Jump 3 backward: 8 → 7 → 6 → 5.
• You land on 5 (8 - 3 = 5).

CBSE Step-by-Step Marking Scheme

Shows 3 backward hops 1 M

Lands on 5 1 M

Q10 Match each expression to its result: (a) 4 + 4, (b) 2 + 7, (c) 9 - 4, (d) 8 - 6. Textbook Exercise • Match the Sum 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 4 + 4 = 8
• (b) 2 + 7 = 9
• (c) 9 - 4 = 5
• (d) 8 - 6 = 2

CBSE Step-by-Step Marking Scheme

All 4 correctly matched 2 M

Q11 Neha has 5 sharpened pencils. Her mother gives her 4 more sharpened pencils. How many pencils does Neha have in her box now? Word Problem • Pencils in a Box 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Pencils with Neha = 5
• Pencils given by mother = 4
• Total pencils = 5 + 4 = 9 pencils.

CBSE Step-by-Step Marking Scheme

5 + 4 = 9 1 M

Answer with unit: 9 pencils 1 M

Q12 There were 8 red apples hanging on a branch. The wind blew and 5 apples fell to the ground. How many apples are still on the branch? Word Problem • Apples on a Tree 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Apples on branch = 8
• Apples fallen = 5
• Apples left on branch = 8 - 5 = 3 apples.

CBSE Step-by-Step Marking Scheme

8 - 5 = 3 1 M

Answer with unit: 3 apples 1 M

Q13 A domino tile has 3 dots on one side and 3 dots on the other side. What is the total sum of dots? Let Us Do • Domino Dots Adding 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 + 3 = 6 dots (doubles fact).

CBSE Step-by-Step Marking Scheme

3 + 3 = 6 1 M

Correct total 1 M

Q14 Geeta had 6 candies. She gave all 6 candies to her friends. How many candies does she have left? Textbook Exercise • Subtracting Everything 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 - 6 = 0 candies.
• When you subtract a number from itself, the result is always zero.

CBSE Step-by-Step Marking Scheme

6 - 6 = 0 1 M

Explanation of zero remainder 1 M

Q15 What number must you add to 6 to make 9? Write the missing number: 6 + __ = 9. Mental Math • Missing Addend 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Count forward from 6: 7, 8, 9 (3 counts).
• 6 + 3 = 9.

CBSE Step-by-Step Marking Scheme

Identified 3 1 M

Workings shown 1 M

Q16 Fill the blank: 8 - __ = 5. Mental Math • Missing Subtrahend 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 8 - 5 = 3.
• Therefore, 8 - 3 = 5.

CBSE Step-by-Step Marking Scheme

Identified 3 1 M

Correct subtraction balance 1 M

Q17 State True or False: 3 + 4 gives the same answer as 4 + 3. Let Us Think • True or False 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 + 4 = 7 and 4 + 3 = 7.
• True. Changing the order of numbers in addition does not change the sum.

CBSE Step-by-Step Marking Scheme

True with correct sums (7 = 7) 2 M

Q18 Raise 4 fingers on your left hand and 4 fingers on your right hand. Count all upright fingers. Activity • Finger Addition 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 fingers + 4 fingers = 8 fingers.

CBSE Step-by-Step Marking Scheme

4 + 4 = 8 2 M

Q19 A fruit basket has 7 oranges. How many more oranges must be placed in the basket so that it contains 10 oranges? Competency Review • Making 10 from Two Groups 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Target = 10 oranges
• Existing = 7 oranges
• Needed = 10 - 7 = 3 oranges.

CBSE Step-by-Step Marking Scheme

10 - 7 = 3 1 M

Answer: 3 oranges 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Frogs in the Pond Case Study

Real-World Context: Four green frogs were sitting on a lotus leaf in the pond. Three more frogs leaped onto the leaf. Soon after, two frogs jumped back into the cool water.

Analytical Task: How many frogs were on the leaf after the three leaped in? How many frogs remained on the leaf after two jumped into the water?

1. After three frogs joined: 4 + 3 = 7 frogs on the leaf.
2. After two jumped away: 7 - 2 = 5 frogs remaining.

CBSE Assessment Rubric: 1.5 M for 4 + 3 = 7 frogs + 1.5 M for 7 - 2 = 5 frogs

Unit 2: Number Operations • Class 1 Mathematics

Chapter 6: Vegetable Farm

Addition & Subtraction within 20, Double Ten-Frames & Word Problems

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Extending addition and subtraction to teen numbers (10 to 20).
Using double ten-frames to bridge 10 and add single digits.
Partitioning numbers: 14 = 10 + 4, 17 = 10 + 7.
Real-life harvest and market word problems with vegetables.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (18 Solved Questions)

Q1 Rani pulls 9 carrots from the first garden patch and 4 carrots from the second patch. How many carrots did Rani pull altogether? Textbook Exercise • Carrot Harvest Addition 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. First patch = 9 carrots
2. Second patch = 4 carrots
3. 9 + 4 = 9 + 1 + 3 = 10 + 3 = 13 carrots.

CBSE Step-by-Step Marking Scheme

Making 10 strategy (9+1+3) 1 M

Answer: 13 carrots 1 M

Q2 There were 15 pumpkins lying in the farm shed. 4 pumpkins were loaded onto a wooden cart. How many pumpkins remain in the shed? Textbook Exercise • Pumpkin Subtraction 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Total pumpkins = 15
2. Loaded pumpkins = 4
3. Pumpkins remaining = 15 - 4 = 11 pumpkins.

CBSE Step-by-Step Marking Scheme

15 - 4 = 11 1 M

Answer with unit: 11 pumpkins 1 M

Q3 One ten-frame is completely full (10 dots), and the second ten-frame has 6 dots. What total number do they represent? Let Us Do • Double Ten-Frame Counting 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Full ten-frame = 10
• Second frame = 6
• Total = 10 + 6 = 16 (Sixteen).

CBSE Step-by-Step Marking Scheme

10 + 6 = 16 1 M

Number name Sixteen 1 M

Q4 Solve:
(a) 10 + 3 = __
(b) 10 + 7 = __
(c) 10 + 9 = __
(d) 10 + 5 = __ Textbook Exercise • Adding to 10 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 10 + 3 = 13
• (b) 10 + 7 = 17
• (c) 10 + 9 = 19
• (d) 10 + 5 = 15

CBSE Step-by-Step Marking Scheme

All 4 sums evaluated correctly 2 M

Q5 Solve:
(a) 14 - 4 = __
(b) 18 - 8 = __
(c) 17 - 10 = __
(d) 12 - 2 = __ Textbook Exercise • Subtracting from Teen Numbers 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 14 - 4 = 10
• (b) 18 - 8 = 10
• (c) 17 - 10 = 7
• (d) 12 - 2 = 10

CBSE Step-by-Step Marking Scheme

All 4 differences evaluated correctly 2 M

Q6 Simran's basket has 11 red tomatoes. Her brother adds 5 green tomatoes to the basket. How many tomatoes are in the basket now? Word Problem • Tomatoes in Baskets 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Red tomatoes = 11
• Green tomatoes = 5
• Total = 11 + 5 = 16 tomatoes.

CBSE Step-by-Step Marking Scheme

11 + 5 = 16 1 M

Answer: 16 tomatoes 1 M

Q7 Farmer Hari had 16 cucumbers. He sold 6 cucumbers to a customer. How many cucumbers does he have left? Word Problem • Cucumbers Sold 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Total cucumbers = 16
• Cucumbers sold = 6
• Cucumbers left = 16 - 6 = 10 cucumbers.

CBSE Step-by-Step Marking Scheme

16 - 6 = 10 1 M

Answer: 10 cucumbers 1 M

Q8 Start at 12 on the number line. Jump forward by 5 steps. Where do you land? Let Us Think • Number Line Jump within 20 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Starting point = 12
• Steps forward = 5
• 12 + 5 = 17.

CBSE Step-by-Step Marking Scheme

12 + 5 = 17 1 M

Correct destination on number line 1 M

Q9 Start at 19 on the number line. Jump backward by 4 steps. Where do you land? Let Us Think • Number Line Backward Jump 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Starting point = 19
• Steps backward = 4
• 19 - 4 = 15.

CBSE Step-by-Step Marking Scheme

19 - 4 = 15 1 M

Correct destination on number line 1 M

Q10 Find the double sum: (a) 5 + 5 = __, (b) 6 + 6 = __, (c) 7 + 7 = __. Textbook Exercise • Adding Doubles 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 5 + 5 = 10
• (b) 6 + 6 = 12
• (c) 7 + 7 = 14

CBSE Step-by-Step Marking Scheme

5+5 = 10 1 M

6+6 = 12 1 M

7+7 = 14 1 M

Q11 How do you add 8 + 5 using the 'Make 10' strategy? Textbook Exercise • Making 10 to Add 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. 8 needs 2 to make 10.
2. Break 5 into 2 + 3.
3. 8 + 2 = 10.
4. 10 + 3 = 13.

CBSE Step-by-Step Marking Scheme

Break 5 into 2 + 3 1 M

10 + 3 = 13 1 M

Q12 A crate had 20 cabbages. The cook used 8 cabbages to make dinner. How many cabbages remain in the crate? Textbook Exercise • Subtracting from 20 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Initial cabbages = 20
• Cabbages used = 8
• Remaining = 20 - 8 = 12 cabbages.

CBSE Step-by-Step Marking Scheme

20 - 8 = 12 1 M

Answer with unit: 12 cabbages 1 M

Q13 Break these numbers into Tens and Ones: (a) 15, (b) 19, (c) 11. Let Us Do • Tens and Ones Deconstruction 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 15 = 1 Ten and 5 Ones
• (b) 19 = 1 Ten and 9 Ones
• (c) 11 = 1 Ten and 1 One

CBSE Step-by-Step Marking Scheme

All 3 broken down correctly 2 M

Q14 Fill the blank: 13 + __ = 18. Mental Math • Missing Number in Equation 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 18 - 13 = 5.
• 13 + 5 = 18.

CBSE Step-by-Step Marking Scheme

Identified 5 2 M

Q15 Fill the blank: 17 - __ = 11. Mental Math • Subtraction Balance 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 17 - 11 = 6.
• 17 - 6 = 11.

CBSE Step-by-Step Marking Scheme

Identified 6 2 M

Q16 Match: (1) 9 + 9, (2) 15 - 3, (3) 8 + 6.
Answers: [12, 14, 18]. Activity • Match Expression to Answer 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (1) 9 + 9 = 18
• (2) 15 - 3 = 12
• (3) 8 + 6 = 14

CBSE Step-by-Step Marking Scheme

All 3 correctly matched 2 M

Q17 Grandmother harvested 7 white radishes and 8 purple turnips. How many root vegetables did she harvest in all? Word Problem • Radishes and Turnips 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Radishes = 7
• Turnips = 8
• Total = 7 + 8 = 15 root vegetables.

CBSE Step-by-Step Marking Scheme

7 + 8 = 15 1 M

Answer: 15 vegetables 1 M

Q18 Which gives a greater answer: (16 - 4) or (11 + 2)? Competency Review • Comparing Differences 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 16 - 4 = 12.
• 11 + 2 = 13.
• Comparing: 13 > 12.
• (11 + 2) gives the greater answer.

CBSE Step-by-Step Marking Scheme

Calculated 12 and 13 1 M

(11 + 2) is greater 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Vegetable Basket Distribution Case Study

Real-World Context: Farmer Kalu harvests 12 orange carrots and 6 red radishes from his organic garden beds. He puts them into a large jute sack.

Analytical Task: How many total vegetables did Farmer Kalu harvest? If he sells 5 carrots at the morning market, how many carrots remain?

1. Total vegetables harvested = 12 + 6 = 18 vegetables.
2. Carrots remaining = 12 - 5 = 7 carrots left.

CBSE Assessment Rubric: 1.5 M for 12 + 6 = 18 vegetables + 1.5 M for 12 - 5 = 7 carrots

Unit 3: Measurement & Patterns • Class 1 Mathematics

Chapter 7: Lina's Family

Non-Standard Lengths, Handspans, Footsteps, Heavy vs Light

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Measuring length using non-standard body units: handspan, fingers, and footsteps (paces).
Understanding why non-standard units vary between children and adults.
Comparing lengths: longer vs shorter, longest vs shortest.
Comparing heights: taller vs shorter, tallest vs shortest.
Comparing weights qualitatively: heavier vs lighter.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (16 Solved Questions)

Q1 What is a 'handspan'? Measure the length of your mathematics textbook using your handspan. How many handspans long is it? Textbook Exercise • Measuring with Handspan 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. A handspan is the distance from the tip of the thumb to the tip of the little finger when the hand is stretched wide open.
2. When measured by a Class 1 student, the Joyful Mathematics book is approximately 2 to 3 handspans long.

CBSE Step-by-Step Marking Scheme

Definition of handspan 1 M

Measurement: ~2 to 3 handspans 1 M

Q2 Look at two pencils: Pencil A has not been sharpened, and Pencil B is a small stub after many days of use. Which pencil is longer? Textbook Exercise • Longer and Shorter Pencils 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Pencil A is longer (new, unsharpened pencil).
• Pencil B is shorter (used stub).

CBSE Step-by-Step Marking Scheme

Pencil A is longer 1 M

Reason based on sharpening 1 M

Q3 Walk from the classroom door to the teacher's blackboard counting your footsteps (paces). If it takes you 15 footsteps and your teacher takes 10 footsteps, explain why. Let Us Do • Measuring Classroom with Footsteps 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. The distance between the door and board is the same.
2. The teacher is an adult with longer legs, so her footsteps are bigger (takes 10 steps).
3. A student's steps are shorter, requiring more footsteps (15 steps).

CBSE Step-by-Step Marking Scheme

Teacher steps are longer 1 M

Student needs more steps 1 M

Q4 In Lina's family, who is the tallest person and who is the shortest: Grandfather, Mother, Lina, or Baby Brother? Textbook Exercise • Taller and Shorter in the Family 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Tallest: Grandfather (or Father).
• Shortest: Baby Brother (crawling toddler).

CBSE Step-by-Step Marking Scheme

Tallest identified 1 M

Shortest identified 1 M

Q5 How many erasers long is your wooden pencil? Place erasers end-to-end to measure. Let Us Do • Measuring with Eraser / Paperclips 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• A standard new wooden pencil is about 4 to 5 standard erasers long.

CBSE Step-by-Step Marking Scheme

Valid estimate (4 to 5 erasers) 1 M

End-to-end placement method 1 M

Q6 Hold a watermelon in one hand and a lemon in the other hand. Which fruit is heavier and which is lighter? Textbook Exercise • Heavier and Lighter 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Heavier: Watermelon (pulls down heavily on your hand).
• Lighter: Lemon (feels very light and easy to hold).

CBSE Step-by-Step Marking Scheme

Watermelon is heavier 1 M

Lemon is lighter 1 M

Q7 Two painters have ladders: Ladder 1 has 12 rungs, and Ladder 2 has 6 rungs. Which ladder is longer? Let Us Think • Comparing Ladders 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Ladder 1 is longer because it has 12 rungs reaching higher up.
• Ladder 2 with 6 rungs is shorter.

CBSE Step-by-Step Marking Scheme

Ladder 1 is longer 1 M

12 rungs > 6 rungs 1 M

Q8 Three girls have hair ribbons: Sita has a 20 cm ribbon, Gita has a 40 cm ribbon, and Rita has a 10 cm ribbon. Whose ribbon is the longest and whose is the shortest? Textbook Exercise • Longest Ribbon 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Longest ribbon: Gita (40 cm).
• Shortest ribbon: Rita (10 cm).

CBSE Step-by-Step Marking Scheme

Gita's ribbon is longest 1 M

Rita's ribbon is shortest 1 M

Q9 How many finger-widths wide is your eraser? Place fingers side-by-side. Let Us Do • Measuring Desk with Finger-Widths 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• A standard eraser is about 2 to 3 finger-widths wide.

CBSE Step-by-Step Marking Scheme

2 to 3 finger-widths 2 M

Q10 An elephant and an ant sit on opposite ends of a seesaw in a funny cartoon. Which side will touch the ground? Let Us Think • Seesaw Balance 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. The elephant is much heavier than the tiny ant.
2. Therefore, the elephant's side will touch the ground, and the ant's side will shoot up into the air.

CBSE Step-by-Step Marking Scheme

Elephant's side touches ground 1 M

Elephant is heavier 1 M

Q11 Compare a dictionary and a comic book. Which book is thicker and which is thinner? Textbook Exercise • Thick and Thin 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Thicker: The dictionary (has hundreds of pages).
• Thinner: The comic book (has only a few thin pages).

CBSE Step-by-Step Marking Scheme

Dictionary is thicker 1 M

Comic book is thinner 1 M

Q12 Among a dog, a giraffe, and a cat, which animal is the tallest? Observation Task • Tallest Animal 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The giraffe is the tallest animal with its long neck standing high above trees.
• The cat is the shortest among the three.

CBSE Step-by-Step Marking Scheme

Giraffe is tallest 1 M

Cat is shortest 1 M

Q13 What is larger: your arm-span (both arms stretched out wide) or your single handspan? Activity • Arm-Span vs Handspan 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Your arm-span is much larger than a single handspan.
• An arm-span equals several handspans together.

CBSE Step-by-Step Marking Scheme

Arm-span is larger 1 M

Explains stretching both arms 1 M

Q14 Which is heavier: your school bag full of books or a single wooden pencil? Textbook Exercise • Heavy School Bag vs Light Pencil 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Heavier: School bag full of books.
• Lighter: A single wooden pencil.

CBSE Step-by-Step Marking Scheme

School bag is heavier 1 M

Pencil is lighter 1 M

Q15 Rope Red is 8 footsteps long. Rope Blue is 11 footsteps long. Which rope is longer and by how many footsteps? Let Us Do • Comparing Rope Lengths 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 11 is greater than 8, so Rope Blue is longer.
• Difference = 11 - 8 = 3 footsteps longer.

CBSE Step-by-Step Marking Scheme

Rope Blue is longer 1 M

3 footsteps difference 1 M

Q16 Why do we need a standard ruler to measure cloth in a shop instead of using the shopkeeper's handspan? Competency Review • Standard vs Non-Standard 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Every person's hand has a different size.
2. A standard wooden or plastic ruler is fixed and equal everywhere, ensuring fair and accurate measurement.

CBSE Step-by-Step Marking Scheme

Handspans differ per person 1 M

Ruler is fixed and equal 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Measuring the Study Table Case Study

Real-World Context: Lina measures the length of her dining table using her handspan. She finds it is 10 handspans long. Her father measures the same table and finds it is only 6 handspans long.

Analytical Task: Why did Lina get 10 handspans while her father got only 6 handspans? Whose handspan is bigger?

1. Father's handspan is bigger because he is an adult.
2. Because father's handspan is bigger, fewer handspans (6) are needed to cover the same table.
3. Lina's hand is smaller, so she needed more handspans (10).

CBSE Assessment Rubric: 1.5 M for father's handspan is bigger + 1.5 M for fewer spans needed

Unit 3: Measurement & Patterns • Class 1 Mathematics

Chapter 8: Fun with Numbers

Numbers 21 to 99, Matchstick Bundles of 10, Tens & Ones

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Extending place value to two-digit numbers up to 99.
Grouping items into bundles of 10 and counting loose ones.
Writing numbers in expanded notation (e.g., 45 = 4 tens and 5 ones = 40 + 5).
Reading and completing the 1 to 100 number chart.
Comparing 2-digit numbers using tens place first, then ones place.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (22 Solved Questions)

Q1 Look at the picture: There are 2 bundles of 10 matchsticks and 4 loose matchsticks. What number is this? Textbook Exercise • Counting Bundles of 10 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2 bundles of 10 = 20
• 4 loose sticks = 4
• Total = 20 + 4 = 24 (Twenty-four).

CBSE Step-by-Step Marking Scheme

20 + 4 = 24 1 M

Number name Twenty-four 1 M

Q2 Write the Tens and Ones for: (a) 35, (b) 52, (c) 60, (d) 78. Textbook Exercise • Tens and Ones Table 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 35 = 3 Tens and 5 Ones
• (b) 52 = 5 Tens and 2 Ones
• (c) 60 = 6 Tens and 0 Ones
• (d) 78 = 7 Tens and 8 Ones

CBSE Step-by-Step Marking Scheme

All 4 correctly partitioned 2 M

Q3 How many bundles of 10 can you tie from 46 matchsticks? How many loose sticks will be left over? Let Us Do • Making Bundles 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• In 46, the tens digit is 4 and the ones digit is 6.
• Therefore, you can tie 4 complete bundles of 10.
• 6 loose sticks will be left over.

CBSE Step-by-Step Marking Scheme

4 bundles of 10 1 M

6 loose sticks left 1 M

Q4 Fill the missing numbers on the strip: 21, 22, __, 24, __, 26, 27, __, 29, 30. Textbook Exercise • Number Strips 21 to 30 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
Counting sequentially:
21, 22, 23, 24, 25, 26, 27, 28, 29, 30.

CBSE Step-by-Step Marking Scheme

Filled 23, 25, 28 correctly 2 M

Q5 Write the numbers from 51 to 60 in correct order. Textbook Exercise • Number Strips 51 to 60 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 51, 52, 53, 54, 55, 56, 57, 58, 59, 60.

CBSE Step-by-Step Marking Scheme

All 10 numbers in order 2 M

Q6 Fill the missing numbers: 91, __, 93, 94, __, 96, __, 98, 99, 100. Let Us Think • Number Strips 91 to 100 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 91, 92, 93, 94, 95, 96, 97, 98, 99, 100.

CBSE Step-by-Step Marking Scheme

Filled 92, 95, 97 accurately 2 M

Q7 Write in expanded form:
(a) 48 = __ + __
(b) 63 = __ + __
(c) 85 = __ + __ Textbook Exercise • Expanded Form 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 48 = 40 + 8
• (b) 63 = 60 + 3
• (c) 85 = 80 + 5

CBSE Step-by-Step Marking Scheme

40 + 8 1 M

60 + 3 1 M

80 + 5 1 M

Q8 Write what comes:
(a) Just before 40
(b) Just after 69
(c) Between 88 and 90 Let Us Do • What Comes Before and After? 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Just before 40 is 39.
• (b) Just after 69 is 70.
• (c) Between 88 and 90 is 89.

CBSE Step-by-Step Marking Scheme

Before 40 = 39 1 M

After 69 = 70 1 M

Between 88 & 90 = 89 1 M

Q9 Circle the greater number in each pair: (a) 42 and 24, (b) 67 and 76. Textbook Exercise • Comparing 2-Digit Numbers 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 4 tens is greater than 2 tens → 42 is greater.
• (b) 7 tens is greater than 6 tens → 76 is greater.

CBSE Step-by-Step Marking Scheme

42 circled 1 M

76 circled 1 M

Q10 I have 5 tens and 3 ones. Who am I? Let Us Think • Number Riddle 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 tens = 50
• 3 ones = 3
• 50 + 3 = 53 (Fifty-three).

CBSE Step-by-Step Marking Scheme

Identified 53 1 M

Number name Fifty-three 1 M

Q11 Write the sequence counting in tens from 10 to 100: 10, 20, 30, __, __, __, __, __, __, 100. Textbook Exercise • Counting in Tens 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 10, 20, 30, 40, 50, 60, 70, 80, 90, 100.

CBSE Step-by-Step Marking Scheme

All tens filled correctly 2 M

Q12 A packet has 10 bindis. Suman buys 3 packets and has 4 loose bindis. How many bindis does Suman have in total? Word Problem • Bindi Packets 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 packets of 10 = 30 bindis
• Loose bindis = 4
• Total = 30 + 4 = 34 bindis.

CBSE Step-by-Step Marking Scheme

30 + 4 = 34 1 M

Answer with unit: 34 bindis 1 M

Q13 What is the smallest 2-digit number? What is the largest 2-digit number? Let Us Do • Smallest 2-Digit Number 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The smallest 2-digit number is 10.
• The largest 2-digit number is 99.

CBSE Step-by-Step Marking Scheme

Smallest = 10 1 M

Largest = 99 1 M

Q14 Circle the smallest number among: 45, 19, 72, 33. Textbook Exercise • Circle the Smallest 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Comparing tens digits: 1 ten is smallest.
• Therefore, 19 is the smallest number.

CBSE Step-by-Step Marking Scheme

Identified 19 as smallest 2 M

Q15 Match: (1) 5 bundles and 2 sticks → 52. (2) 6 bundles and 9 sticks → 69. Activity • Match Number to Bundles 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 tens + 2 ones = 52
• 6 tens + 9 ones = 69

CBSE Step-by-Step Marking Scheme

Correct matches verified 2 M

Q16 What number comes right after 99? How many digits does it have? Let Us Think • Adding 1 to 99 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 99 + 1 = 100 (One Hundred).
• 100 has 3 digits (1 hundred, 0 tens, 0 ones).

CBSE Step-by-Step Marking Scheme

100 (One Hundred) 1 M

It has 3 digits 1 M

Q17 Arrange in order from smallest to biggest: 34, 12, 65, 48. Textbook Exercise • Ascending Order 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Comparing tens digits: 12 < 34 < 48 < 65.
• Ascending order: 12, 34, 48, 65.

CBSE Step-by-Step Marking Scheme

Correct order: 12, 34, 48, 65 2 M

Q18 Arrange in order from biggest to smallest: 71, 95, 28, 50. Textbook Exercise • Descending Order 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Comparing tens digits: 95 > 71 > 50 > 28.
• Descending order: 95, 71, 50, 28.

CBSE Step-by-Step Marking Scheme

Correct order: 95, 71, 50, 28 2 M

Q19 Grandma made 4 necklaces of 10 pearls each. She has 9 extra loose pearls. How many pearls does she have in all? Word Problem • Beads on a String 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 necklaces = 40 pearls
• Loose pearls = 9
• Total = 40 + 9 = 49 pearls.

CBSE Step-by-Step Marking Scheme

40 + 9 = 49 1 M

Answer: 49 pearls 1 M

Q20 Write any two numbers where the tens digit and the ones digit are exactly the same (e.g. 11). Mental Math • Same Digits 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Examples: 22, 33, 44, 55, 66, 77, 88, 99.
• Any two of these are correct.

CBSE Step-by-Step Marking Scheme

Two valid double-digit numbers 2 M

Q21 If you are at 37 on the 100-chart and you jump down 1 box (add 10), what number do you reach? Let Us Do • Tens Strip Jump 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 37 + 10 = 47.
• Jumping down one row in a 100-grid always increases the number by 1 ten (10).

CBSE Step-by-Step Marking Scheme

Reaches 47 1 M

Explains adding 10 1 M

Q22 Aman has 28 loose sticks. How many bundles of 10 can he make, and how many sticks will remain? Competency Review • Making Tens from Loose Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 28 = 20 + 8 = 2 tens and 8 ones.
• Aman can make 2 bundles of 10, and 8 sticks will remain.

CBSE Step-by-Step Marking Scheme

2 bundles of 10 1 M

8 sticks remain 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Flower Garlands at the Temple Case Study

Real-World Context: Meena stringed 3 garlands of 10 marigold flowers each, and she has 7 loose flowers remaining in her basket.

Analytical Task: How many total flowers does Meena have? How many more loose flowers does she need to complete a fourth garland of 10?

1. 3 garlands of 10 = 30 flowers. Loose flowers = 7. Total = 30 + 7 = 37 flowers.
2. To make a full garland of 10 from 7 flowers, she needs: 10 - 7 = 3 more flowers.

CBSE Assessment Rubric: 1.5 M for 30 + 7 = 37 flowers + 1.5 M for 10 - 7 = 3 flowers

Unit 3: Measurement & Patterns • Class 1 Mathematics

Chapter 9: Utsav

Repeating & Growing Patterns, Toran Beads & Rangoli Shapes

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Identifying repeating units in decorative borders, torans, and fabrics.
Extending shape patterns: alternating colors, sizes, and rotations.
Growing patterns in numbers and blocks (e.g. 1, 2, 3... or 2, 4, 6...).
Patterns in nature: day and night, seasons, animal stripes.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (16 Solved Questions)

Q1 Look at the sequence: Circle, Square, Circle, Square, Circle, __. What shape comes next? Textbook Exercise • Extending Shape Patterns 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. The repeating rule is alternating between Circle and Square.
2. After Circle comes Square.

CBSE Step-by-Step Marking Scheme

Identified Square 1 M

Alternating rule explained 1 M

Q2 A festival toran has beads: Red, Blue, Red, Blue, Red, __, __. Fill the next two beads. Textbook Exercise • Toran Bead Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The pattern alternates between Red and Blue.
• The next two beads are: Blue, Red.

CBSE Step-by-Step Marking Scheme

Filled Blue, then Red 2 M

Q3 Complete the pattern: ↑, ↓, ↑, ↓, ↑, __, __. Let Us Do • Arrow Directions 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The arrow points alternately Up and Down.
• The next two arrows are: ↓ (Down), ↑ (Up).

CBSE Step-by-Step Marking Scheme

Down then Up 2 M

Q4 Look at the dots: •, ••, •••, ••••, _____. Draw the next group of dots. Textbook Exercise • Growing Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. The rule is adding 1 more dot each time (1, 2, 3, 4...).
2. The next group will have 5 dots (•••••).

CBSE Step-by-Step Marking Scheme

5 dots drawn 1 M

Adding 1 rule stated 1 M

Q5 Complete the skip pattern: 2, 4, 6, 8, __, __. Let Us Think • Number Pattern in 2s 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The rule is adding 2 each time.
• Next numbers: 8 + 2 = 10, 10 + 2 = 12.

CBSE Step-by-Step Marking Scheme

10 and 12 2 M

Q6 In a rangoli grid, Priya colors tiles: Yellow, Green, Yellow, Green. What color should she use for the 5th tile? Textbook Exercise • Rangoli Tile Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Odd positions (1st, 3rd, 5th) are Yellow.
• Even positions (2nd, 4th) are Green.
• The 5th tile will be Yellow.

CBSE Step-by-Step Marking Scheme

Yellow color 1 M

Odd position reasoning 1 M

Q7 Fill the next letters: A, B, A, B, A, __, __. Let Us Do • Alternating Letter Patterns 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Alternating between A and B.
• Next letters: B, A.

CBSE Step-by-Step Marking Scheme

B, then A 2 M

Q8 Which of these repeats as a natural pattern: Day and Night, or Broken Glass? Textbook Exercise • Day and Night Natural Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Day and Night is a repeating pattern because morning always follows night in a predictable cycle.
• Broken glass happens randomly and does not repeat.

CBSE Step-by-Step Marking Scheme

Day and Night repeats 1 M

Predictable cycle explained 1 M

Q9 Complete the chain: 5, 10, 15, 20, __, __. Let Us Think • Number Pattern in 5s 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The rule is adding 5 each time.
• 20 + 5 = 25.
• 25 + 5 = 30.

CBSE Step-by-Step Marking Scheme

25 and 30 2 M

Q10 A block printer stamps on cloth: Leaf pointing up, Leaf pointing right, Leaf pointing down, Leaf pointing left. What direction will the 5th stamp point? Textbook Exercise • Saree Border Block Print 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The pattern completes a full rotation in 4 steps.
• The 5th stamp repeats the 1st step: Leaf pointing up.

CBSE Step-by-Step Marking Scheme

Points Up 1 M

4-step rotation rule 1 M

Q11 What two colors make the repeating pattern on a zebra's coat? Activity • Zebra Stripes Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Black and White stripes alternate across the zebra's body.

CBSE Step-by-Step Marking Scheme

Black and White 2 M

Q12 Fill the missing numbers: 10, 20, 30, __, 50, __. Textbook Exercise • Number Pattern in 10s 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Counting in tens: 10, 20, 30, 40, 50, 60.

CBSE Step-by-Step Marking Scheme

Filled 40 and 60 2 M

Q13 Children play a rhythm game: Clap, Stamp, Clap, Stamp, Clap, __. What action comes next? Let Us Do • Clap and Stamp Rhythm Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Following the alternating rhythm, the next action is Stamp.

CBSE Step-by-Step Marking Scheme

Stamp 2 M

Q14 Look at the sequence: ▲, ▲, ▲, ■, ▲, ▲. Which shape breaks the pattern? Textbook Exercise • Find the Odd One Out in Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The continuous pattern consists of triangles (▲).
• The square (■) breaks the pattern.

CBSE Step-by-Step Marking Scheme

Square (■) breaks pattern 2 M

Q15 1 block high, 2 blocks high, 3 blocks high. How many blocks high will the 4th step be? Let Us Think • Staircase Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Each step adds 1 block.
• The 4th step will be 4 blocks high.

CBSE Step-by-Step Marking Scheme

4 blocks high 2 M

Q16 Using a circle (O) and a cross (X), create a repeating pattern that has 6 symbols. Competency Review • Create Your Own Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Example pattern: O, X, O, X, O, X (or O, O, X, O, O, X).

CBSE Step-by-Step Marking Scheme

Valid 6-symbol repeating pattern 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Diwali Toran Decoration Case Study

Real-World Context: During Diwali utsav, Priya makes a door toran using green mango leaves and yellow marigold flowers in the pattern: Leaf, Flower, Leaf, Flower, Leaf, Flower.

Analytical Task: What comes next in Priya's toran pattern after the flower? How many leaves will she need if her toran has 6 flowers?

1. After the flower, the next item in the pattern is a green mango leaf.
2. Since the pattern pairs 1 leaf with 1 flower, for 6 flowers she will need 6 mango leaves.

CBSE Assessment Rubric: 1.5 M for 'Leaf' identification + 1.5 M for 6 leaves calculation

Unit 3: Measurement & Patterns • Class 1 Mathematics

Chapter 10: How do I Spend my Day?

Daily Sequence, Morning to Night, Meal Times & Days of the Week

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Sequencing daily events in chronological order from morning to bedtime.
Distinguishing Morning, Afternoon, Evening, and Night.
Estimating duration: activities that take a short time vs long time.
Learning the seven days of the week in correct order.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (15 Solved Questions)

Q1 Number these daily activities in the order you do them: (a) Eating dinner, (b) Brushing teeth in morning, (c) Going to sleep, (d) Eating lunch at school. Textbook Exercise • Morning to Night Sequence 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. (b) Brushing teeth in morning → 1st
2. (d) Eating lunch at school → 2nd
3. (a) Eating dinner with family → 3rd
4. (c) Going to sleep in bed → 4th

CBSE Step-by-Step Marking Scheme

All 4 correctly sequenced 2 M

Q2 When do you see: (a) The bright rising sun? (b) The shining moon and twinkling stars? Textbook Exercise • Morning, Afternoon, Evening, Night 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Rising sun → Morning.
• (b) Moon and stars → Night.

CBSE Step-by-Step Marking Scheme

Morning 1 M

Night 1 M

Q3 Tick (✓) the activity that takes more time: (a) Blinking your eyes once, or (b) Eating your lunch. Let Us Do • Which Takes Longer? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Blinking takes just 1 second.
• Eating lunch takes about 15 to 20 minutes, which is much longer.
• Tick (b) Eating your lunch.

CBSE Step-by-Step Marking Scheme

(b) Eating lunch takes longer 1 M

Comparison of time duration 1 M

Q4 Which takes more time to fill with tap water: a large bathroom bucket or a small tea cup? Textbook Exercise • Filling Bucket vs Mug 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• A large bathroom bucket takes more time because it holds much more water.
• A tea cup fills up in just 2 seconds.

CBSE Step-by-Step Marking Scheme

Bathroom bucket takes more time 1 M

Holds more water 1 M

Q5 Write the seven days of the week in correct order, starting from Monday. Let Us Think • Seven Days of the Week 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday.

CBSE Step-by-Step Marking Scheme

All 7 days in order 2 M

Q6 If today is Wednesday, what day will tomorrow be? What day was yesterday? Textbook Exercise • What Day is Tomorrow? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Tomorrow will be Thursday.
• Yesterday was Tuesday.

CBSE Step-by-Step Marking Scheme

Tomorrow = Thursday 1 M

Yesterday = Tuesday 1 M

Q7 At what part of the school day does the morning prayer assembly take place? Let Us Do • School Prayer Time 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Morning assembly takes place at the beginning of the school day (Morning).

CBSE Step-by-Step Marking Scheme

Morning / start of school 2 M

Q8 Rohan walks to school. Simran goes on a bicycle. Who will reach school faster? Textbook Exercise • Walking vs Cycling 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Simran on the bicycle will reach faster because cycling covers distance in less time than walking.

CBSE Step-by-Step Marking Scheme

Bicycle is faster 1 M

Takes less time 1 M

Q9 On which day of the week do most schools have a weekly holiday? Let Us Think • Favorite Holiday 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Most schools have a weekly holiday on Sunday.

CBSE Step-by-Step Marking Scheme

Sunday 2 M

Q10 Match the meal to its time: (a) Breakfast, (b) Lunch, (c) Dinner.
Times: [Morning, Afternoon, Night]. Textbook Exercise • Meal Association 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Breakfast → Morning
• (b) Lunch → Afternoon
• (c) Dinner → Night

CBSE Step-by-Step Marking Scheme

Breakfast = Morning 1 M

Lunch = Afternoon 1 M

Dinner = Night 1 M

Q11 Name two things you do in the morning before coming to school. Activity • Morning Routine 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Examples: Brushing teeth, taking a bath, eating breakfast, wearing school uniform.

CBSE Step-by-Step Marking Scheme

Two valid morning activities 2 M

Q12 Which day comes between Friday and Sunday? Textbook Exercise • Days Between 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The day between Friday and Sunday is Saturday.

CBSE Step-by-Step Marking Scheme

Saturday 2 M

Q13 How many days are there in one complete week? How many days do you go to school? Let Us Think • How Many Days in a Week? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• There are 7 days in one complete week.
• Most students attend school on 5 or 6 days.

CBSE Step-by-Step Marking Scheme

7 days in a week 1 M

5 or 6 school days 1 M

Q14 Does milk boil faster or does baking a large cake take longer? Textbook Exercise • Boiling Milk vs Boiling Water 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Baking a cake takes longer (about 30 to 45 minutes).
• Boiling milk takes only a few minutes.

CBSE Step-by-Step Marking Scheme

Baking cake takes longer 2 M

Q15 What do you do at night when darkness falls outside and the streetlights turn on? Competency Review • Night Sky Observation 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• In the night, we have dinner with family, read a storybook, and sleep in bed to rest.

CBSE Step-by-Step Marking Scheme

Dinner and sleeping to rest 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

School Day Schedule Case Study

Real-World Context: Aarav wakes up at 6:30 in the morning, studies at school until 1:30 in the afternoon, plays with friends at 5:00 in the evening, and goes to sleep at 9:00 at night.

Analytical Task: Which of these activities happens in the evening? If tomorrow is Sunday, what day was yesterday if today is Saturday?

1. Playing with friends at 5:00 happens in the evening.
2. If today is Saturday, yesterday was Friday.

CBSE Assessment Rubric: 1.5 M for evening activity + 1.5 M for Friday calculation

Unit 4: Equal Grouping & Money • Class 1 Mathematics

Chapter 11: How Many Times?

Equal Groups, Pairs, Auto Wheels & Repeated Addition

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Equal grouping of concrete items (groups of 2, 3, 4, 5).
Repeated addition as multiplication readiness (2 + 2 + 2 = 3 times 2 = 6).
Counting legs of animals and wheels of vehicles in equal groups.
Fair sharing and dividing into equal piles.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (16 Solved Questions)

Q1 There are 5 children standing outside the temple. Each child wears 1 pair (2 shoes). How many shoes are there altogether? Textbook Exercise • Pairs of Shoes 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Number of children = 5
2. Shoes per child = 2
3. Repeated addition = 2 + 2 + 2 + 2 + 2 = 10 shoes (5 times 2 = 10).

CBSE Step-by-Step Marking Scheme

2+2+2+2+2 sentence 1 M

Answer: 10 shoes 1 M

Q2 There are 3 dogs playing in the yard. Each dog has 4 legs. How many legs in all? Textbook Exercise • Legs of Dogs 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Number of dogs = 3
• Legs per dog = 4
• 4 + 4 + 4 = 12 legs altogether (3 times 4 = 12).

CBSE Step-by-Step Marking Scheme

4 + 4 + 4 = 12 1 M

Answer with unit: 12 legs 1 M

Q3 Rohan has 3 bags. Each bag contains 5 shiny marbles. How many marbles does Rohan have in all? Let Us Do • Groups of 5 Marbles 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Bags = 3
• Marbles per bag = 5
• 5 + 5 + 5 = 15 marbles (3 times 5 = 15).

CBSE Step-by-Step Marking Scheme

5 + 5 + 5 = 15 1 M

Answer: 15 marbles 1 M

Q4 There are 2 dining tables in the hall. Each table has 4 wooden legs. How many legs in all? Textbook Exercise • Table Legs 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 + 4 = 8 table legs (2 times 4 = 8).

CBSE Step-by-Step Marking Scheme

4 + 4 = 8 1 M

Answer: 8 legs 1 M

Q5 Write as repeated addition: 4 times 2. Let Us Think • How Many Times 2? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 times 2 means adding 2 four times:
• 2 + 2 + 2 + 2 = 8.

CBSE Step-by-Step Marking Scheme

2 + 2 + 2 + 2 = 8 2 M

Q6 There are 4 pairs of pigeons perched on the ledge. How many pigeons is that? Textbook Exercise • Birds in Pairs 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 1 pair = 2 pigeons
• 4 pairs = 2 + 2 + 2 + 2 = 8 pigeons.

CBSE Step-by-Step Marking Scheme

1 pair = 2 1 M

4 pairs = 8 pigeons 1 M

Q7 A flower has 5 petals. How many petals do 2 such flowers have? Let Us Do • Flower Petals 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 + 5 = 10 petals (2 times 5 = 10).

CBSE Step-by-Step Marking Scheme

5 + 5 = 10 2 M

Q8 Each tricycle has 3 wheels. How many wheels do 3 tricycles have? Textbook Exercise • Tricycle Wheels 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 + 3 + 3 = 9 wheels (3 times 3 = 9).

CBSE Step-by-Step Marking Scheme

3 + 3 + 3 = 9 2 M

Q9 Mother has 8 laddoos. She shares them equally between Ravi and Meena. How many laddoos does each child get? Let Us Think • Equal Sharing into 2 Piles 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Total laddoos = 8
2. 8 shared equally into 2 groups: 4 + 4 = 8.
3. Each child gets 4 laddoos.

CBSE Step-by-Step Marking Scheme

4 + 4 = 8 sharing 1 M

Each gets 4 laddoos 1 M

Q10 Find the sum: 10 + 10 + 10 + 10 = __. How many times 10 is this? Textbook Exercise • Repeated Addition of 10 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 10 + 10 + 10 + 10 = 40.
• This is 4 times 10.

CBSE Step-by-Step Marking Scheme

Sum = 40 1 M

4 times 10 1 M

Q11 There are 2 packets with 6 crayons in each packet. How many crayons in total? Word Problem • Crayons in Packets 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 + 6 = 12 crayons (2 times 6 = 12).

CBSE Step-by-Step Marking Scheme

6 + 6 = 12 2 M

Q12 4 children hold up both hands. How many fingers is that in total? (Count in tens). Activity • Hands and Fingers 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Each child has 10 fingers on two hands.
• 4 children = 10 + 10 + 10 + 10 = 40 fingers.

CBSE Step-by-Step Marking Scheme

10 + 10 + 10 + 10 = 40 2 M

Q13 A kitten has 3 whiskers on the left cheek and 3 whiskers on the right cheek. How many whiskers in all? Textbook Exercise • Cat Whiskers 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 + 3 = 6 whiskers.

CBSE Step-by-Step Marking Scheme

3 + 3 = 6 2 M

Q14 How many wheels do 5 bicycles have? Count in 2s. Let Us Do • Bicycle Wheels 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2, 4, 6, 8, 10.
• 5 bicycles have 10 wheels.

CBSE Step-by-Step Marking Scheme

Skip counting in 2s 1 M

Answer: 10 wheels 1 M

Q15 What does '3 times 4' mean in addition? Mental Math • Times Meaning 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• '3 times 4' means adding 4 three times: 4 + 4 + 4 = 12.

CBSE Step-by-Step Marking Scheme

4 + 4 + 4 = 12 2 M

Q16 A fruit seller has 12 apples and puts 4 apples in each tray. How many trays does he need? Competency Review • Equal Piles of Apples 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 + 4 + 4 = 12.
• The seller needs 3 trays.

CBSE Step-by-Step Marking Scheme

Identified 3 trays 1 M

4 + 4 + 4 = 12 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Auto-Rickshaw Stand Case Study

Real-World Context: At the neighborhood stand, there are 4 auto-rickshaws parked in a row. Each auto-rickshaw has exactly 3 wheels.

Analytical Task: How many wheels do all 4 auto-rickshaws have altogether? Write the addition sentence and the total wheel count.

1. Number of groups = 4. Wheels per auto = 3.
2. Addition sentence = 3 + 3 + 3 + 3 = 12 wheels altogether (4 times 3 = 12).

CBSE Assessment Rubric: 1.5 M for 3+3+3+3 sentence + 1.5 M for 12 wheels answer

Unit 4: Equal Grouping & Money • Class 1 Mathematics

Chapter 12: How Much Can We Spend?

Indian Currency: Coins ₹1, ₹2, ₹5, ₹10, Notes ₹10, ₹20 & Toy Bills

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Recognizing Indian coins: ₹1, ₹2, ₹5, ₹10.
Recognizing currency notes: ₹10 and ₹20 notes.
Combining coins to pay an exact amount (e.g. ₹7 = ₹5 + ₹2).
Calculating total cost of items bought at a stationary/toy shop.
Calculating return change after payment.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (17 Solved Questions)

Q1 Name the four coins commonly used in India shown in your textbook. Textbook Exercise • Identifying Coins 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The four common Indian coins are: ₹1, ₹2, ₹5, and ₹10.

CBSE Step-by-Step Marking Scheme

All 4 coins named (₹1, ₹2, ₹5, ₹10) 2 M

Q2 How can you pay ₹6 using two coins? Textbook Exercise • Making ₹6 with Coins 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Take one ₹5 coin and one ₹1 coin.
• ₹5 + ₹1 = ₹6.

CBSE Step-by-Step Marking Scheme

₹5 + ₹1 = ₹6 2 M

Q3 How can you pay ₹7 using two coins? Textbook Exercise • Making ₹7 with Coins 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Take one ₹5 coin and one ₹2 coin.
• ₹5 + ₹2 = ₹7.

CBSE Step-by-Step Marking Scheme

₹5 + ₹2 = ₹7 2 M

Q4 How many ₹5 coins do you need to make ₹10? Let Us Do • Making ₹10 with ₹5 Coins 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹5 + ₹5 = ₹10.
• You need two ₹5 coins.

CBSE Step-by-Step Marking Scheme

Two ₹5 coins 1 M

₹5 + ₹5 = ₹10 1 M

Q5 How many ₹2 coins make ₹10? Textbook Exercise • Making ₹10 with ₹2 Coins 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Count in 2s: 2, 4, 6, 8, 10 (5 times).
• You need five ₹2 coins.

CBSE Step-by-Step Marking Scheme

Five ₹2 coins 2 M

Q6 An orange ice candy costs ₹10. Simran pays with two ₹5 coins. Did she pay the exact amount? Let Us Think • Buying an Ice Candy 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Two ₹5 coins = ₹5 + ₹5 = ₹10.
• Yes, she paid the exact amount.

CBSE Step-by-Step Marking Scheme

Yes, exact amount 1 M

₹5 + ₹5 = ₹10 1 M

Q7 A toy top costs ₹6 and a balloon costs ₹2. What is the total cost? Textbook Exercise • Total Bill at Toy Shop 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Cost of top = ₹6
• Cost of balloon = ₹2
• Total cost = ₹6 + ₹2 = ₹8.

CBSE Step-by-Step Marking Scheme

₹6 + ₹2 = ₹8 2 M

Q8 Kabir buys a notebook for ₹15. He hands the shopkeeper a ₹20 note. How much change does Kabir get back? Textbook Exercise • Return Change Calculation 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Money given = ₹20
• Cost of notebook = ₹15
• Change returned = ₹20 - ₹15 = ₹5.

CBSE Step-by-Step Marking Scheme

₹20 - ₹15 = ₹5 1 M

Answer: ₹5 1 M

Q9 How do you make a coin print on paper using a pencil? Let Us Do • Coin Rubbing Activity 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Place a coin underneath a sheet of paper.
2. Rub gently over the paper with a soft pencil.
3. The design and number (₹1, ₹2, ₹5) appears like magic on paper!

CBSE Step-by-Step Marking Scheme

Place coin under paper 1 M

Rub with pencil 1 M

Q10 How many ₹10 notes make a ₹20 note? Textbook Exercise • Making ₹20 with ₹10 Notes 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹10 + ₹10 = ₹20.
• It takes two ₹10 notes to make ₹20.

CBSE Step-by-Step Marking Scheme

Two ₹10 notes 2 M

Q11 Aman has ₹10 in his pocket. A toy car costs ₹8 and a ball costs ₹5. Can Aman buy both toys together? Let Us Think • Can You Buy Both? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Total cost of both = ₹8 + ₹5 = ₹13.
2. Aman only has ₹10.
3. Since ₹13 is more than ₹10, No, Aman cannot buy both toys together (he is short by ₹3).

CBSE Step-by-Step Marking Scheme

No, total is ₹13 > ₹10 1 M

Short by ₹3 noted 1 M

Q12 Match the coin combinations to their total:
(a) ₹5 + ₹5
(b) ₹5 + ₹2 + ₹1
(c) ₹2 + ₹2 + ₹1 Textbook Exercise • Match Money to Amount 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) ₹5 + ₹5 = ₹10
• (b) ₹5 + ₹2 + ₹1 = ₹8
• (c) ₹2 + ₹2 + ₹1 = ₹5

CBSE Step-by-Step Marking Scheme

All 3 correctly evaluated 3 M

Q13 What is the official currency symbol of India? Draw it. Activity • Indian Rupee Symbol 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The Indian Rupee symbol is ₹.
• It is derived from the Devanagari letter 'र' with a horizontal stroke across the top.

CBSE Step-by-Step Marking Scheme

Symbol ₹ identified 1 M

Devanagari 'र' origin 1 M

Q14 One chocolate bar costs ₹4. How much do two chocolate bars cost? Word Problem • Two Candies 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹4 + ₹4 = ₹8.

CBSE Step-by-Step Marking Scheme

₹4 + ₹4 = ₹8 2 M

Q15 Name one way to pay ₹15 using a note and a coin. Textbook Exercise • Making ₹15 with Coins and Notes 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• One ₹10 note and one ₹5 coin = ₹10 + ₹5 = ₹15.

CBSE Step-by-Step Marking Scheme

₹10 note + ₹5 coin 2 M

Q16 A teddy bear has a price tag of ₹18. Ravi pays with a ₹20 note. What coin should the shopkeeper give him back? Let Us Do • Toy Price Tags 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹20 - ₹18 = ₹2.
• The shopkeeper should give him a ₹2 coin.

CBSE Step-by-Step Marking Scheme

₹2 coin 2 M

Q17 Riya drops a ₹5 coin into her piggy bank on Monday and a ₹5 coin on Tuesday. How much money has she saved? Competency Review • Saving in a Piggy Bank 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹5 + ₹5 = ₹10 saved.

CBSE Step-by-Step Marking Scheme

₹10 saved 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Stationery Shop Purchase Case Study

Real-World Context: Rohan goes to the stationery shop with a ₹20 note. He buys a wooden pencil for ₹5 and an eraser for ₹3.

Analytical Task: What is the total cost of the pencil and eraser? How much change should the shopkeeper return to Rohan from his ₹20 note?

1. Total cost = ₹5 + ₹3 = ₹8.
2. Change returned = ₹20 - ₹8 = ₹12 (e.g., a ₹10 coin and a ₹2 coin).

CBSE Assessment Rubric: 1.5 M for ₹5 + ₹3 = ₹8 + 1.5 M for ₹20 - ₹8 = ₹12 change

Unit 4: Equal Grouping & Money • Class 1 Mathematics

Chapter 13: So Many Toys and Puzzles

Counting Collections, Tally Tables, Most & Least Frequent Toys

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Collecting and recording data by counting objects in a picture.
Organizing information into a simple frequency table.
Finding which item appears the most number of times (most popular).
Finding which item appears the least number of times.
Counting letters in names and comparing lengths.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (16 Solved Questions)

Q1 Look at the toy shelf picture: Count the toys:
(a) How many toy cars are there? (Count: 4)
(b) How many footballs are there? (Count: 6)
(c) How many teddy bears are there? (Count: 3) Textbook Exercise • Counting Toys on the Shelf 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Toy cars = 4
• (b) Footballs = 6
• (c) Teddy bears = 3

CBSE Step-by-Step Marking Scheme

All 3 counts correct 2 M

Q2 From the shelf above (Cars: 4, Footballs: 6, Teddy bears: 3):
(a) Which toy is the most in number?
(b) Which toy is the least in number? Textbook Exercise • Most and Least 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Footballs (6) are the most in number.
• (b) Teddy bears (3) are the least in number.

CBSE Step-by-Step Marking Scheme

Most = Footballs 1 M

Least = Teddy bears 1 M

Q3 Count the letters in each friend's name:
(a) AMAN
(b) SIMRAN
(c) OM
Which name has the most letters? Let Us Do • Counting Letters in Names 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• AMAN = 4 letters
• SIMRAN = 6 letters
• OM = 2 letters
• SIMRAN has the most letters (6 letters).

CBSE Step-by-Step Marking Scheme

All counts correct (4, 6, 2) 1 M

SIMRAN has most 1 M

Q4 From the three names above (AMAN, SIMRAN, OM), which name has the least letters? Textbook Exercise • Shortest Name 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• OM has only 2 letters.
• Therefore, OM has the least letters (shortest name).

CBSE Step-by-Step Marking Scheme

OM has least letters 2 M

Q5 In a basket: 5 Apples, 8 Bananas, 3 Oranges. How many total fruits are in the basket? Let Us Think • Fruit Basket Tally 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Apples = 5
• Bananas = 8
• Oranges = 3
• Total fruits = 5 + 8 + 3 = 16 fruits altogether.

CBSE Step-by-Step Marking Scheme

5 + 8 + 3 = 16 1 M

Answer with unit: 16 fruits 1 M

Q6 In the fruit basket above (Apples: 5, Bananas: 8), how many more bananas are there than apples? Textbook Exercise • Comparing Quantities 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Bananas = 8
• Apples = 5
• Difference = 8 - 5 = 3 more bananas.

CBSE Step-by-Step Marking Scheme

8 - 5 = 3 1 M

Answer: 3 more bananas 1 M

Q7 A farm picture shows: 3 Cows, 5 Goats, 2 Horses, and 4 Ducks. Put this into a table and find the total animals. Let Us Do • Counting Animals on a Farm 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Cows: 3
• Goats: 5
• Horses: 2
• Ducks: 4
• Total = 3 + 5 + 2 + 4 = 14 farm animals.

CBSE Step-by-Step Marking Scheme

Table values correct 1 M

Total 14 animals 1 M

Q8 From the farm data above (Cows: 3, Goats: 5, Horses: 2, Ducks: 4), which animal is seen the most? Textbook Exercise • Which Animal is Most? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Goats (5) are seen the most on the farm.

CBSE Step-by-Step Marking Scheme

Goats (5) 2 M

Q9 From the farm data above, which animal is seen the least? Textbook Exercise • Which Animal is Least? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Horses (2) are seen the least.

CBSE Step-by-Step Marking Scheme

Horses (2) 2 M

Q10 Shoe sizes in a class: Size 1: 4 children, Size 2: 9 children, Size 3: 5 children. Which shoe size is worn by the most children? Let Us Think • Shoes in the Rack 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Size 1 = 4
• Size 2 = 9
• Size 3 = 5
• Size 2 is worn by the most children (9 children).

CBSE Step-by-Step Marking Scheme

Size 2 identified 1 M

Highest count (9) 1 M

Q11 Look at two names: RAJU and NEHA. Do they have the same number of letters? Textbook Exercise • Same Letter Count 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• RAJU = 4 letters
• NEHA = 4 letters
• Yes, both names have exactly 4 letters.

CBSE Step-by-Step Marking Scheme

Yes, both have 4 letters 2 M

Q12 Children vote for favorite color: Red: 7 votes, Blue: 7 votes, Yellow: 3 votes. Did Red and Blue get equal votes? Activity • Color Preference Chart 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Red = 7 votes
• Blue = 7 votes
• Yes, Red and Blue got equal votes (7 = 7).

CBSE Step-by-Step Marking Scheme

Yes, equal votes (7 = 7) 2 M

Q13 From the color vote above (Red: 7, Blue: 7, Yellow: 3), which color was chosen by the least students? Textbook Exercise • Least Liked Color 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Yellow (3 votes) was chosen by the least students.

CBSE Step-by-Step Marking Scheme

Yellow (3 votes) 2 M

Q14 Represent with dots: 3 Pencils (•••), 5 Erasers (•••••). Which group has more dots? Word Problem • Drawing Circles for Data 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Erasers (5 dots) has more dots than Pencils (3 dots).

CBSE Step-by-Step Marking Scheme

Erasers have more dots 2 M

Q15 A pencil case holds 2 blue pens, 3 red pens, and 4 black pens. How many pens in all? Mental Math • Total Items from Table 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2 + 3 + 4 = 9 pens in all.

CBSE Step-by-Step Marking Scheme

2 + 3 + 4 = 9 2 M

Q16 Why is it helpful to count and organize items in a table instead of keeping them in a mixed heap? Competency Review • Why Do We Make Tables? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. A table makes it easy to see exact counts quickly without recounting.
2. We can immediately tell which item is the most, which is the least, and the total.

CBSE Step-by-Step Marking Scheme

Quick and easy to read 1 M

Identifies most/least immediately 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Classroom Toy Day Survey Case Study

Real-World Context: On Toy Day, the teacher counts toys brought by Class 1 students: 5 toy cars, 7 stuffed teddy bears, and 2 wooden train sets.

Analytical Task: Which toy was brought by the most students? Which toy was brought by the least students? How many total toys were brought?

1. Most students brought teddy bears (7).
2. Least students brought wooden train sets (2).
3. Total toys = 5 + 7 + 2 = 14 toys in all.

CBSE Assessment Rubric: 1 M for most + 1 M for least + 1 M for total sum

Unit 1: Math-Magic Classic • Class 1 Mathematics

Chapter 1: Shapes and Space

Inside-Outside, Bigger-Smaller, Top-Bottom, Rolling-Sliding & Shapes

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

The Arab and his Camel: understanding Inside and Outside.
Comparing sizes: Bigger vs Smaller, Biggest vs Smallest.
Relative positions: Top vs Bottom, Nearer vs Farther, On vs Under, Above vs Below.
Movement properties of 3D objects: Rolling vs Sliding.
Sorting shapes by colour, size, and type into boxes.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (18 Solved Questions)

Q1 In the desert winter, the Arab pitched his tent and went inside. The camel was outside in the cold. What did the camel ask first? Textbook Story • The Arab and his Camel 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The camel asked: 'May I put my neck inside? It is too cold outside.'
• The Arab allowed him to put his neck inside the tent.

CBSE Step-by-Step Marking Scheme

Asked to put neck inside 1 M

Reason: too cold outside 1 M

Q2 At the end of 'The Arab and his Camel' story, who was finally inside the tent, and who was outside? Textbook Story • Who is Inside at the End? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Inside: The Camel was inside the tent.
• Outside: The Arab was outside in the cold desert night because the tent was too small for both.

CBSE Step-by-Step Marking Scheme

Camel is inside 1 M

Arab is outside 1 M

Q3 Tick (✓) the bigger animal between a Hippopotamus and a Puppy. Textbook Exercise • Bigger and Smaller 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The Hippopotamus is bigger (tick ✓).
• The puppy is much smaller.

CBSE Step-by-Step Marking Scheme

Hippopotamus ticked 2 M

Q4 Look at the two leaves: a broad banana leaf and a small rose leaf. Tick (✓) the smaller leaf. Textbook Exercise • Smaller Leaf 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The rose leaf is smaller (tick ✓).
• The banana leaf is bigger.

CBSE Step-by-Step Marking Scheme

Rose leaf ticked 2 M

Q5 Two children are racing rolling tires. One has a small scooter tire and one has a large tractor tire. Tick (✓) the smaller tire. Textbook Exercise • Smaller Tire 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The scooter tire is smaller (tick ✓).

CBSE Step-by-Step Marking Scheme

Smaller tire identified 2 M

Q6 Look at three trees in a garden: Tree 1 (huge banyan), Tree 2 (medium mango), Tree 3 (tiny sapling). Tick (✓) the smallest tree. Textbook Exercise • Smallest Tree 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The tiny sapling (Tree 3) is the smallest tree.

CBSE Step-by-Step Marking Scheme

Smallest tree identified 2 M

Q7 Among an Elephant, a Cat, and a Dog, tick (✓) the biggest animal. Textbook Exercise • Biggest Animal 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The Elephant is the biggest animal.

CBSE Step-by-Step Marking Scheme

Elephant is biggest 2 M

Q8 In the children's park, a boy is sitting at the top of the slide, a girl is sliding down the middle, and another boy is standing on the ground at the bottom. Who is at the top? Textbook Exercise • Top and Bottom on a Slide 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The boy sitting at the highest point of the ladder is at the top.
• The boy on the grass is at the bottom.

CBSE Step-by-Step Marking Scheme

Boy at top identified 1 M

Boy at bottom identified 1 M

Q9 Two birds are flying in the sky towards their nest in a tree. Bird A is 2 meters away from the nest. Bird B is 8 meters away. Tick (✓) the bird nearest to home. Textbook Exercise • Bird Nearest to Home 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Bird A is nearest to home because 2 meters is a shorter distance than 8 meters.

CBSE Step-by-Step Marking Scheme

Bird A is nearest 1 M

Shorter distance explained 1 M

Q10 Three cats are in the garden: Cat 1 is near the flowerpot, Cat 2 is near the bench, and Cat 3 is near the far garden gate. Which cat is farthest from the tree? Textbook Exercise • Cat Farthest from the Tree 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Cat 3 (near the far garden gate) is farthest from the tree.

CBSE Step-by-Step Marking Scheme

Cat 3 is farthest 2 M

Q11 Look at the playground: Boy A is closest to the slide ladder. Boy B is running across the football field. Who is nearest to the slide and who is farthest? Textbook Exercise • Nearest and Farthest from Slide 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Nearest: Boy A.
• Farthest: Boy B.

CBSE Step-by-Step Marking Scheme

Nearest = Boy A 1 M

Farthest = Boy B 1 M

Q12 In the classroom picture: A cat is sleeping on the floor under the teacher's desk. An open book is on top of the desk. Where is the cat and where is the book? Textbook Exercise • On and Under the Table 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The book is on the desk.
• The cat is under the desk.

CBSE Step-by-Step Marking Scheme

Book on desk 1 M

Cat under desk 1 M

Q13 A ceiling fan hangs in the room. A boy sits on a bed. Which is above and which is below? Textbook Exercise • Above and Below the Fan 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The fan is above the boy.
• The boy is below the fan.

CBSE Step-by-Step Marking Scheme

Fan is above 1 M

Boy is below 1 M

Q14 Put shapes into two boxes by drawing lines: Pink Box (cubes and rectangular boxes) and Yellow Box (round balls and spheres). Where does an orange go? Textbook Exercise • Sorting Shapes into Boxes 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• An orange is round, so it goes into the Yellow Box (round balls).
• A wooden chalk box goes into the Pink Box.

CBSE Step-by-Step Marking Scheme

Orange in Yellow Box 1 M

Chalk box in Pink Box 1 M

Q15 Match the similar shapes by drawing a line: (a) Ball, (b) Chalk-box, (c) Candle, (d) Party hat.
Options: [Tomato, Die, Water pipe, Cone toy]. Textbook Exercise • Match Similar Shapes 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Ball → Tomato (both round spheres)
• (b) Chalk-box → Die (both cubes)
• (c) Candle → Water pipe (both cylinders)
• (d) Party hat → Cone toy (both cones)

CBSE Step-by-Step Marking Scheme

All 4 correctly matched 2 M

Q16 Tick (✓) the objects that roll: Pencil, Ball, Tomato, Butter pack. Textbook Exercise • Rolling Objects 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Pencil: Rolls on its round side (✓)
• Ball: Rolls (✓)
• Tomato: Rolls (✓)
• Butter pack: Has flat faces, so it slides (not rolls).

CBSE Step-by-Step Marking Scheme

Pencil, Ball, Tomato roll 2 M

Q17 Tick (✓) the objects that slide: Cucumber, Tomato, Battery, Briefcase (Suitcase). Textbook Exercise • Sliding Objects 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Briefcase (Suitcase): Has flat faces and slides (✓).
• Cucumber and Battery can roll on their sides and slide on flat ends.

CBSE Step-by-Step Marking Scheme

Suitcase slides 1 M

Flat face explanation 1 M

Q18 How did the grandmother help the lamb escape from the hungry wolf? Textbook Story • The Lamb and the Dholak 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Grandmother put the little lamb inside a hollow, round dholak.
2. She rolled the dholak down the slope.
3. Because the dholak was round, it rolled fast and took the lamb safely home.

CBSE Step-by-Step Marking Scheme

Put lamb inside dholak 1 M

Rolled down hill safely 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Wise Grandmother's Rolling Dholak Case Study

Real-World Context: A little lamb was going to visit his grandmother. In the forest, a hungry wolf stopped him to eat him. The lamb requested, 'Let me go to my grandmother, I will grow fat and then you can eat me.' On returning, grandmother hid the lamb inside a wooden dholak and rolled it down the grassy hill.

Analytical Task: Why did the dholak roll smoothly down the hill instead of sliding? Did the wolf catch the lamb?

1. The dholak has a curved cylindrical surface, which rolls easily down a slope.
2. The dholak rolled very fast past the waiting wolf, and the lamb reached home safely without getting caught.

CBSE Assessment Rubric: 1.5 M for curved surface rolls + 1.5 M for lamb reaches home safely

Unit 1: Math-Magic Classic • Class 1 Mathematics

Chapter 2: Numbers from One to Nine

Counting 1 to 9, As Many As, More or Less, Make Groups & Zero

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

One-to-one matching: 'As many as'.
Counting physical objects from 1 to 9.
Comparing collections: More vs Less.
Counting and writing numerals and number names.
Grouping objects into given numbers and concept of Zero.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (25 Solved Questions)

Q1 In the textbook illustration: 5 cats are paired with 5 mice by drawing connecting lines. Is every cat matched to a mouse? Textbook Exercise • As Many As Cats and Mice 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Yes, there are 5 cats and 5 mice.
• Since 5 = 5, there are as many mice as cats.

CBSE Step-by-Step Marking Scheme

5 = 5 matching 1 M

As many as verified 1 M

Q2 5 children are playing musical chairs. There are only 4 chairs. Tick (✓) which is MORE: Children or Chairs? Textbook Exercise • More or Less Children and Chairs 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Children = 5
• Chairs = 4
• 5 > 4, so Children are MORE (tick ✓).

CBSE Step-by-Step Marking Scheme

Children are more 2 M

Q3 Count the watermelons: There are 2 watermelons. Match with numeral 2. Textbook Exercise • Count and Match 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2 watermelons match with numeral 2 (Two).

CBSE Step-by-Step Marking Scheme

Matched to 2 2 M

Q4 Count the milk bottles in the crate: • • • • •. Write the numeral. Textbook Exercise • Counting Milk Bottles 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• There are 5 milk bottles. Numeral: 5 (Five).

CBSE Step-by-Step Marking Scheme

Numeral 5 written 2 M

Q5 Count the wooden ladders standing against the wall: • • •. Write the numeral. Textbook Exercise • Counting Ladders 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• There are 3 wooden ladders. Numeral: 3 (Three).

CBSE Step-by-Step Marking Scheme

Numeral 3 written 2 M

Q6 Count the red gas cylinders: • • • •. Write the numeral. Textbook Exercise • Counting Gas Cylinders 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• There are 4 gas cylinders. Numeral: 4 (Four).

CBSE Step-by-Step Marking Scheme

Numeral 4 written 2 M

Q7 There are 6 glass bottles in a row. Draw a line around a group of 4 bottles. Textbook Exercise • Make a Group of 4 Bottles 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Circle 4 bottles together.
• 2 bottles remain uncircled.

CBSE Step-by-Step Marking Scheme

4 bottles grouped 1 M

2 remain noted 1 M

Q8 There are 5 trees. Circle a group of 3 trees. Textbook Exercise • Make a Group of 3 Trees 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Draw a circle around any 3 trees.
• 2 trees remain outside.

CBSE Step-by-Step Marking Scheme

Group of 3 circled 2 M

Q9 There are 4 drums. Draw a ring around a group of 2 drums. Textbook Exercise • Make a Group of 2 Drums 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Ring 2 drums.
• 2 drums remain outside.

CBSE Step-by-Step Marking Scheme

Group of 2 ringed 2 M

Q10 There are 7 lanterns. Circle a group of 5 lanterns. Textbook Exercise • Make a Group of 5 Lanterns 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Ring 5 lanterns.
• 7 - 5 = 2 lanterns remain outside.

CBSE Step-by-Step Marking Scheme

Group of 5 ringed 2 M

Q11 One, one, one, one little baby eating a bun! Two, two, two, two little children going to the zoo! What comes next for three? Let Us Do • One to Nine Rhyme 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 'Three, three, three, three green parrots flying free!'

CBSE Step-by-Step Marking Scheme

Three green parrots flying free 2 M

Q12 Write the number names for: 1, 2, 3, 4, 5. Textbook Exercise • Number Names 1 to 5 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 1 = One
• 2 = Two
• 3 = Three
• 4 = Four
• 5 = Five

CBSE Step-by-Step Marking Scheme

All 5 spelled correctly 2 M

Q13 Write the number names for: 6, 7, 8, 9. Textbook Exercise • Number Names 6 to 9 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 = Six
• 7 = Seven
• 8 = Eight
• 9 = Nine

CBSE Step-by-Step Marking Scheme

All 4 spelled correctly 2 M

Q14 Match: (a) 6 leaves, (b) 7 glasses, (c) 8 sticks, (d) 9 mangoes to numerals [6, 7, 8, 9]. Textbook Exercise • Count and Match 6 to 9 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 leaves → 6
• 7 glasses → 7
• 8 sticks → 8
• 9 mangoes → 9

CBSE Step-by-Step Marking Scheme

All 4 correctly matched 2 M

Q15 There are 8 birds in the tree. You are asked to color 6 birds. How many birds remain uncolored? Textbook Exercise • Color 6 Birds 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Total birds = 8
• Colored birds = 6
• Uncolored birds = 8 - 6 = 2 birds.

CBSE Step-by-Step Marking Scheme

8 - 6 = 2 1 M

Answer: 2 birds 1 M

Q16 Out of 4 pine trees, color 3 trees. How many trees are not colored? Textbook Exercise • Color 3 Trees 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 - 3 = 1 tree remains uncolored.

CBSE Step-by-Step Marking Scheme

4 - 3 = 1 2 M

Q17 There are 3 boats in the river. Color 1 boat. How many boats are left uncolored? Textbook Exercise • Color 1 Boat 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 - 1 = 2 boats left uncolored.

CBSE Step-by-Step Marking Scheme

3 - 1 = 2 2 M

Q18 Write the missing numbers: 1, __, 3, 4, __, 6, __, 8, 9. Textbook Exercise • Missing Numbers 1 to 9 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Missing numbers are: 2, 5, 7.
• Full sequence: 1, 2, 3, 4, 5, 6, 7, 8, 9.

CBSE Step-by-Step Marking Scheme

Filled 2, 5, 7 2 M

Q19 What number comes just before 5, and what comes just after 5? Textbook Exercise • What Comes Before 5? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Just before 5 is 4.
• Just after 5 is 6.

CBSE Step-by-Step Marking Scheme

Before 5 = 4 1 M

After 5 = 6 1 M

Q20 What number lies between 7 and 9? Textbook Exercise • What Comes Between 7 and 9? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The number between 7 and 9 is 8.

CBSE Step-by-Step Marking Scheme

Identified 8 2 M

Q21 There are 3 pretty flowers in a flower pot. A child plucks 1 flower, then another, then the last one. How many flowers are left in the pot? Textbook Exercise • Concept of Zero Flower Pot 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Total flowers = 3
2. Flowers plucked = 3
3. Flowers remaining = 3 - 3 = 0 (Zero).
4. Zero means no flowers are left in the pot.

CBSE Step-by-Step Marking Scheme

3 - 3 = 0 1 M

Concept of zero explained 1 M

Q22 4 birds sit on a tree. All 4 fly away together. How many birds are on the branch? Textbook Exercise • Birds Flying Off Branch 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 - 4 = 0 birds.

CBSE Step-by-Step Marking Scheme

0 birds 2 M

Q23 A mouse cage has 3 white mice. All 3 run out through the open door. How many mice are in the cage? Textbook Exercise • Cages with Mice 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 - 3 = 0 mice.

CBSE Step-by-Step Marking Scheme

0 mice 2 M

Q24 A girl holds 3 balloons. All 3 burst: POP! POP! POP! How many balloons are in her hand? Textbook Exercise • Balloons in Hand 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 - 3 = 0 balloons.

CBSE Step-by-Step Marking Scheme

0 balloons 2 M

Q25 Write all single-digit numerals starting from 0 up to 9. Competency Review • Writing Numerals 0 to 9 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

CBSE Step-by-Step Marking Scheme

All 10 digits written in order 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Playground Matchsticks Counting Case Study

Real-World Context: Five children are playing in the school garden. Teacher gives 1 biscuit to each child. Then she counts the remaining biscuits in the packet: there are 3 biscuits left.

Analytical Task: How many biscuits were given to the 5 children? How many total biscuits were in the packet originally?

1. 5 children each got 1 biscuit, so 5 biscuits were given out.
2. Total biscuits originally = 5 given + 3 left = 8 biscuits.

CBSE Assessment Rubric: 1.5 M for 5 biscuits given + 1.5 M for 5 + 3 = 8 total biscuits

Unit 1: Math-Magic Classic • Class 1 Mathematics

Chapter 3: Addition

One More, How Many Altogether, Adding Pictures & Dominoes

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Understanding addition as putting together or adding to.
The 'One More' concept (1 more than 4 is 5).
Using the plus (+) and equal to (=) signs correctly.
Addition facts up to 9 and zero in addition.
Solving pictorial addition problems and number line addition.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (22 Solved Questions)

Q1 Two little green parrots looking for a mate; one more joins in, making them: ___. Textbook Exercise • One More Parrot Rhyme 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2 + 1 = 3 parrots (Three).

CBSE Step-by-Step Marking Scheme

2 + 1 = 3 2 M

Q2 Three little green parrots singing in a tree; one more joins in, making them: ___. Textbook Exercise • Three Parrots One More 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 + 1 = 4 parrots (Four).

CBSE Step-by-Step Marking Scheme

3 + 1 = 4 2 M

Q3 Four little green parrots sitting on the floor; one more joins in, making them: ___. Textbook Exercise • Four Parrots One More 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 + 1 = 5 parrots (Five).

CBSE Step-by-Step Marking Scheme

4 + 1 = 5 2 M

Q4 2 cows and 1 cow is equal to how many cows? Textbook Exercise • How Many Altogether (Cows) 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2 + 1 = 3 cows.

CBSE Step-by-Step Marking Scheme

2 + 1 = 3 cows 2 M

Q5 3 children are playing in the sand. 2 more children join them. How many children altogether? Textbook Exercise • Children Playing 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 + 2 = 5 children altogether.

CBSE Step-by-Step Marking Scheme

3 + 2 = 5 children 2 M

Q6 Vase A has 5 flowers. Vase B has 2 flowers. How many flowers altogether? Textbook Exercise • Flowers in Vases 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 + 2 = 7 flowers.

CBSE Step-by-Step Marking Scheme

5 + 2 = 7 flowers 2 M

Q7 4 birds sit on a branch. 2 more birds fly in and sit. How many birds altogether? Textbook Exercise • Birds on Branch 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 + 2 = 6 birds.

CBSE Step-by-Step Marking Scheme

4 + 2 = 6 birds 2 M

Q8 Rahul has 3 marbles in his left hand and 2 marbles in his right hand. How many marbles does he have in all? Textbook Exercise • Marbles in Hand 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 + 2 = 5 marbles.

CBSE Step-by-Step Marking Scheme

3 + 2 = 5 marbles 2 M

Q9 A boy holds 3 balloons. The other boy holds 0 balloons. How many balloons do both have together? Textbook Exercise • Adding Zero (Balloons) 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 + 0 = 3 balloons.

CBSE Step-by-Step Marking Scheme

3 + 0 = 3 balloons 2 M

Q10 Solve: 0 + 4 = __. Textbook Exercise • Zero and Four 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 0 + 4 = 4.

CBSE Step-by-Step Marking Scheme

0 + 4 = 4 2 M

Q11 Add dots: (••) + (••••) = ? Textbook Exercise • Adding Dots 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2 + 4 = 6 dots.

CBSE Step-by-Step Marking Scheme

2 + 4 = 6 2 M

Q12 Add vertically:
4
+ 2
--- Textbook Exercise • Vertical Addition 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
4
+ 2
---
6

CBSE Step-by-Step Marking Scheme

Answer 6 2 M

Q13 Add:
3
+ 5
--- Textbook Exercise • Add 3 and 5 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
3
+ 5
---
8

CBSE Step-by-Step Marking Scheme

Answer 8 2 M

Q14 Add:
4
+ 0
--- Textbook Exercise • Add 4 and 0 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
4
+ 0
---
4

CBSE Step-by-Step Marking Scheme

Answer 4 2 M

Q15 Find the sums:
(a) 2 + 3 = __
(b) 7 + 1 = __
(c) 3 + 4 = __ Textbook Exercise • Horizontal Addition 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 2 + 3 = 5
• (b) 7 + 1 = 8
• (c) 3 + 4 = 7

CBSE Step-by-Step Marking Scheme

2+3 = 5 1 M

7+1 = 8 1 M

3+4 = 7 1 M

Q16 Match the sums that give 7: (a) 4 + 3, (b) 5 + 2, (c) 6 + 1. Textbook Exercise • Match the Pairs 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 + 3 = 7
• 5 + 2 = 7
• 6 + 1 = 7
• All three expressions equal 7.

CBSE Step-by-Step Marking Scheme

All equal 7 verified 2 M

Q17 Fill in the missing numeral: 5 + __ = 7. Textbook Exercise • Missing Addend 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 7 - 5 = 2.
• 5 + 2 = 7.

CBSE Step-by-Step Marking Scheme

Missing number is 2 2 M

Q18 Fill in the blank: __ + 3 = 9. Textbook Exercise • Missing Addend to 9 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 9 - 3 = 6.
• 6 + 3 = 9.

CBSE Step-by-Step Marking Scheme

Missing number is 6 2 M

Q19 Write any two pairs of numbers that add up to 8. Textbook Exercise • Adding to Make 8 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Pair 1: 4 + 4 = 8
• Pair 2: 5 + 3 = 8 (or 6 + 2, 7 + 1).

CBSE Step-by-Step Marking Scheme

Two valid pairs 2 M

Q20 6 ants are marching towards a sugar crystal. 2 more ants join the line. How many ants in the line now? Word Problem • Ants in a Line 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 + 2 = 8 ants.

CBSE Step-by-Step Marking Scheme

6 + 2 = 8 ants 2 M

Q21 3 frogs sit on Stone A. 3 frogs sit on Stone B. How many frogs in total? Word Problem • Frogs on Stones 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 + 3 = 6 frogs.

CBSE Step-by-Step Marking Scheme

3 + 3 = 6 frogs 2 M

Q22 Does 2 + 5 give the same answer as 5 + 2? Show the working. Competency Review • Commutative Property 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2 + 5 = 7
• 5 + 2 = 7
• Yes, both equal 7. The order of adding numbers does not change the total.

CBSE Step-by-Step Marking Scheme

Both equal 7 1 M

Order does not change sum 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Cow in the Meadow Case Study

Real-World Context: Two cows are grazing in the green meadow. One more cow comes and joins them to graze sweet grass.

Analytical Task: How many cows are grazing altogether? If two more calves join, what is the new total?

1. 2 cows + 1 more cow = 3 cows grazing altogether.
2. With 2 more calves: 3 + 2 = 5 animals altogether.

CBSE Assessment Rubric: 1.5 M for 2 + 1 = 3 cows + 1.5 M for 3 + 2 = 5 animals

Unit 1: Math-Magic Classic • Class 1 Mathematics

Chapter 4: Subtraction

Take Away, Crossing Out, How Many Left & Subtraction Facts

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Understanding subtraction as 'Taking away' from a collection.
Crossing out pictures/dots to find the remaining count.
Using the minus sign (-) and equal to (=) signs.
Subtraction facts within 9 and subtracting zero.
Subtracting a number from itself (e.g. 5 - 5 = 0).

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (21 Solved Questions)

Q1 A twig has 6 leaves. Take away 2 leaves. How many leaves are left? Textbook Exercise • Take Away Leaves 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 - 2 = 4 leaves left.

CBSE Step-by-Step Marking Scheme

6 - 2 = 4 2 M

Q2 There are 5 butterflies on a rose flower. All 5 butterflies fly away. How many butterflies remain on the flower? Textbook Exercise • Take Away Butterflies 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 - 5 = 0 butterflies.
• When all items are taken away, zero remains.

CBSE Step-by-Step Marking Scheme

5 - 5 = 0 1 M

Explanation of zero 1 M

Q3 3 frogs sit on the bank. 1 frog jumps into the water. How many frogs stay on the bank? Textbook Exercise • Frogs in Water 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 - 1 = 2 frogs stay on the bank.

CBSE Step-by-Step Marking Scheme

3 - 1 = 2 2 M

Q4 There were 6 glass jugs on the table. 4 jugs broke. How many jugs are left unbroken? Textbook Exercise • Jugs on Table 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 - 4 = 2 jugs left unbroken.

CBSE Step-by-Step Marking Scheme

6 - 4 = 2 2 M

Q5 There are 7 dots: (•••••••). Cross out 3 dots. How many dots are left uncrossed? Textbook Exercise • Crossing Out Dots 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 7 - 3 = 4 dots left.

CBSE Step-by-Step Marking Scheme

7 - 3 = 4 2 M

Q6 Subtract vertically:
8
- 2
--- Textbook Exercise • Vertical Subtraction 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
8
- 2
---
6

CBSE Step-by-Step Marking Scheme

Answer 6 2 M

Q7 Subtract:
9
- 4
--- Textbook Exercise • Subtract 4 from 9 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
9
- 4
---
5

CBSE Step-by-Step Marking Scheme

Answer 5 2 M

Q8 Subtract:
5
- 0
--- Textbook Exercise • Subtract Zero 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
5
- 0
---
5

CBSE Step-by-Step Marking Scheme

Answer 5 2 M

Q9 Subtract:
7
- 7
--- Textbook Exercise • Subtract Number from Itself 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
7
- 7
---
0

CBSE Step-by-Step Marking Scheme

Answer 0 2 M

Q10 Solve:
(a) 4 - 2 = __
(b) 8 - 5 = __
(c) 9 - 1 = __ Textbook Exercise • Horizontal Differences 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 4 - 2 = 2
• (b) 8 - 5 = 3
• (c) 9 - 1 = 8

CBSE Step-by-Step Marking Scheme

4-2 = 2 1 M

8-5 = 3 1 M

9-1 = 8 1 M

Q11 Match the subtraction facts that equal 3: (a) 6 - 3, (b) 5 - 2, (c) 7 - 4, (d) 8 - 5. Textbook Exercise • Match the Difference 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 - 3 = 3
• 5 - 2 = 3
• 7 - 4 = 3
• 8 - 5 = 3
• All four expressions equal 3.

CBSE Step-by-Step Marking Scheme

All evaluated to 3 2 M

Q12 Fill in the blank: 8 - __ = 7. Textbook Exercise • Missing Number in Subtraction 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 8 - 7 = 1.
• 8 - 1 = 7.

CBSE Step-by-Step Marking Scheme

Blank is 1 2 M

Q13 Fill in the blank: __ - 2 = 3. Textbook Exercise • Missing Minuend 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 + 2 = 5.
• 5 - 2 = 3.

CBSE Step-by-Step Marking Scheme

Blank is 5 2 M

Q14 A monkey had 6 bananas. He ate 3 bananas. How many bananas are left? Word Problem • Bananas Eaten 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 - 3 = 3 bananas left.

CBSE Step-by-Step Marking Scheme

6 - 3 = 3 bananas 2 M

Q15 9 sparrows were pecking grains in the courtyard. A barking dog startled them and 5 flew away. How many sparrows remained? Word Problem • Sparrows Flying Away 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 9 - 5 = 4 sparrows remained.

CBSE Step-by-Step Marking Scheme

9 - 5 = 4 sparrows 2 M

Q16 Ali had 7 candies. He gave 4 candies to his sister. How many candies does Ali have now? Word Problem • Candies Shared 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 7 - 4 = 3 candies.

CBSE Step-by-Step Marking Scheme

7 - 4 = 3 candies 2 M

Q17 Solve: 9 - 6 = __. Textbook Exercise • Take Away from 9 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Count down from 9: 8, 7, 6, 5, 4, 3.
• 9 - 6 = 3.

CBSE Step-by-Step Marking Scheme

Answer 3 2 M

Q18 Solve: 8 - 8 = __. Textbook Exercise • Take Away from 8 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 8 - 8 = 0.

CBSE Step-by-Step Marking Scheme

Answer 0 2 M

Q19 What happens when you subtract 1 from any number? Give an example. Textbook Exercise • Subtracting 1 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Subtracting 1 gives the number just before it (the predecessor).
• Example: 7 - 1 = 6.

CBSE Step-by-Step Marking Scheme

Gives number just before 1 M

Valid example (7 - 1 = 6) 1 M

Q20 Is 5 - 2 equal to 2 - 5? Let Us Think • True or False in Subtraction 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 - 2 = 3.
• 2 - 5 cannot be done with whole positive numbers.
• No. Unlike addition, the order of numbers cannot be reversed in subtraction.

CBSE Step-by-Step Marking Scheme

No, order cannot be changed 2 M

Q21 How can you check if 8 - 3 = 5 is correct using addition? Competency Review • Checking by Addition 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Add the answer (5) to the number subtracted (3):
• 5 + 3 = 8 (the original number).
• This proves the subtraction is correct.

CBSE Step-by-Step Marking Scheme

5 + 3 = 8 1 M

Proves inverse operation 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Leaves on a Twig Case Study

Real-World Context: A green twig had 6 tender leaves. A hungry caterpillar came and ate 2 leaves.

Analytical Task: How many leaves are left on the twig? If the caterpillar comes back and eats 4 more leaves, how many leaves remain?

1. Leaves left initially = 6 - 2 = 4 leaves left.
2. After eating 4 more: 4 - 4 = 0 leaves left.

CBSE Assessment Rubric: 1.5 M for 6 - 2 = 4 leaves + 1.5 M for 4 - 4 = 0 leaves

Unit 2: Math-Magic Classic • Class 1 Mathematics

Chapter 5: Numbers from Ten to Twenty

Bundles of 10, Counting 10-20, Tens and Ones, Addition & Subtraction

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Making groups of 10 from loose objects (matchsticks, pencils).
Counting from 10 to 20: 10 + 1 = 11 up to 10 + 10 = 20.
Partitioning numbers into Tens and Ones.
Comparing numbers from 10 to 20: greater than and smaller than.
Addition and subtraction within 20.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (24 Solved Questions)

Q1 How many loose matchsticks make 1 bundle of 10? What do we call 10 ones? Textbook Exercise • Bundle of 10 Matchsticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Exactly 10 loose matchsticks tied together make 1 bundle.
• 10 ones is called 1 Ten.

CBSE Step-by-Step Marking Scheme

10 loose matchsticks 1 M

10 ones = 1 Ten 1 M

Q2 Look at 14 ice-cream cups. Circle a group of 10 cups. How many cups remain uncircled? Textbook Exercise • Make a Group of 10 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Total cups = 14
• Circled group = 10 (1 ten)
• Uncircled cups = 14 - 10 = 4 cups.

CBSE Step-by-Step Marking Scheme

Group of 10 circled 1 M

4 remaining 1 M

Q3 Write the numbers from 10 to 15 in order with their number names. Textbook Exercise • Counting 10 to 15 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 10 = Ten
• 11 = Eleven
• 12 = Twelve
• 13 = Thirteen
• 14 = Fourteen
• 15 = Fifteen

CBSE Step-by-Step Marking Scheme

All 6 numerals & names correct 2 M

Q4 Write the numbers from 16 to 20 in order with their number names. Textbook Exercise • Counting 16 to 20 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 16 = Sixteen
• 17 = Seventeen
• 18 = Eighteen
• 19 = Nineteen
• 20 = Twenty

CBSE Step-by-Step Marking Scheme

All 5 numerals & names correct 2 M

Q5 In the number 18, how many tens and how many ones are there? Textbook Exercise • Tens and Ones for 18 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• In 18, there is 1 Ten and 8 Ones (10 + 8 = 18).

CBSE Step-by-Step Marking Scheme

1 Ten and 8 Ones 2 M

Q6 Write Tens and Ones for 15. Textbook Exercise • Tens and Ones for 15 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 15 = 1 Ten and 5 Ones (10 + 5 = 15).

CBSE Step-by-Step Marking Scheme

1 Ten and 5 Ones 2 M

Q7 Write Tens and Ones for 12. Textbook Exercise • Tens and Ones for 12 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 12 = 1 Ten and 2 Ones.

CBSE Step-by-Step Marking Scheme

1 Ten and 2 Ones 2 M

Q8 How many tens and how many ones make 20? Textbook Exercise • Tens and Ones for 20 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 20 = 2 Tens and 0 Ones (10 + 10 = 20).

CBSE Step-by-Step Marking Scheme

2 Tens and 0 Ones 2 M

Q9 Circle the bigger number: (a) 11 and 13, (b) 16 and 14. Textbook Exercise • Circle the Bigger Number (Teens) 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 13 is bigger than 11 → Circle 13.
• (b) 16 is bigger than 14 → Circle 16.

CBSE Step-by-Step Marking Scheme

13 circled 1 M

16 circled 1 M

Q10 Circle the smaller number: (a) 20 and 10, (b) 12 and 17. Textbook Exercise • Circle the Smaller Number (Teens) 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 10 is smaller than 20 → Circle 10.
• (b) 12 is smaller than 17 → Circle 12.

CBSE Step-by-Step Marking Scheme

10 circled 1 M

12 circled 1 M

Q11 Circle the biggest number among: 13, 3, 9. Textbook Exercise • Biggest Number Among Three 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 13 is a 2-digit teen number (1 ten and 3 ones).
• 3 and 9 are 1-digit numbers.
• 13 is the biggest number.

CBSE Step-by-Step Marking Scheme

13 is biggest 2 M

Q12 Circle the smallest number among: 12, 15, 20. Textbook Exercise • Smallest Number Among Three 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Comparing: 12 < 15 < 20.
• 12 is the smallest number.

CBSE Step-by-Step Marking Scheme

12 is smallest 2 M

Q13 Solve: 4 + 5 = __ and 14 + 5 = __. Textbook Exercise • Addition within 20 (4 + 5) 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 + 5 = 9
• 14 + 5 = 10 + (4 + 5) = 10 + 9 = 19.

CBSE Step-by-Step Marking Scheme

4+5 = 9 1 M

14+5 = 19 1 M

Q14 Solve: 8 + 7 = __ using the 'Make 10' method. Textbook Exercise • Addition 8 + 7 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. 8 needs 2 to make 10.
2. 7 = 2 + 5.
3. 8 + 2 = 10.
4. 10 + 5 = 15.

CBSE Step-by-Step Marking Scheme

Make 10 steps shown 1 M

Answer: 15 1 M

Q15 Add:
11
+ 5
--- Textbook Exercise • Addition 11 + 5 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
11
+ 5
---
16

CBSE Step-by-Step Marking Scheme

Answer 16 2 M

Q16 Subtract:
17
- 5
--- Textbook Exercise • Subtraction 17 - 5 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
17
- 5
---
12 (7 - 5 = 2, bring down 1 ten).

CBSE Step-by-Step Marking Scheme

Answer 12 2 M

Q17 Solve: 18 - 8 = __. Textbook Exercise • Subtraction 18 - 8 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 18 = 10 + 8.
• Subtracting 8 leaves 10.

CBSE Step-by-Step Marking Scheme

Answer 10 2 M

Q18 Solve: 15 - 3 = __. Textbook Exercise • Subtraction 15 - 3 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 - 3 = 2.
• 10 + 2 = 12.

CBSE Step-by-Step Marking Scheme

Answer 12 2 M

Q19 Rahul has 8 apples. Sonu gave him 7 more apples. How many apples does Rahul have now? Word Problem • Rahul's Apples 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 8 + 7 = 15 apples.

CBSE Step-by-Step Marking Scheme

8 + 7 = 15 apples 2 M

Q20 Sohan had 12 bananas. He ate 4 bananas. How many bananas are left? Word Problem • Sohan's Bananas 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 12 - 4 = 8 bananas left.

CBSE Step-by-Step Marking Scheme

12 - 4 = 8 bananas 2 M

Q21 What number comes just before 13? What number comes just after 18? Textbook Exercise • What Comes Just After 18? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Just before 13 is 12.
• Just after 18 is 19.

CBSE Step-by-Step Marking Scheme

Before 13 = 12 1 M

After 18 = 19 1 M

Q22 What number lies between 14 and 16? Textbook Exercise • Between 14 and 16 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The number between 14 and 16 is 15.

CBSE Step-by-Step Marking Scheme

15 2 M

Q23 Match: (1) 1 bundle of 10 and 6 sticks → 16. (2) 1 bundle of 10 and 9 sticks → 19. Activity • Match Numeral to Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 10 + 6 = 16
• 10 + 9 = 19

CBSE Step-by-Step Marking Scheme

Matches verified 2 M

Q24 How many ones must be added to 14 to make 20? Competency Review • Making 20 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 20 - 14 = 6 ones.

CBSE Step-by-Step Marking Scheme

6 ones 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Matchstick Bundling Project Case Study

Real-World Context: Deepak has 14 loose matchsticks on his work table. His teacher asks him to make a bundle of 10 matchsticks using a red rubber band.

Analytical Task: How many bundles of 10 can Deepak make? How many loose matchsticks will remain outside the bundle?

1. 14 has 1 ten and 4 ones.
2. Deepak can make 1 bundle of 10 matchsticks.
3. 4 loose matchsticks will remain outside.

CBSE Assessment Rubric: 1.5 M for 1 bundle of 10 + 1.5 M for 4 loose sticks

Unit 2: Math-Magic Classic • Class 1 Mathematics

Chapter 6: Time

Daily Routines, Morning to Night Sequence & Activity Duration

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Sequencing daily life routines: waking up, brushing, breakfast, school, playing, studying, sleeping.
Identifying Morning, Afternoon, Evening, and Night.
Comparing duration: activities taking longer vs shorter time.
Sequencing steps of making chapati from kneading flour to baking.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (16 Solved Questions)

Q1 Number the activities in the order you do them in the morning: (a) Eating breakfast, (b) Waking up from bed, (c) Wearing school uniform, (d) Brushing teeth. Textbook Exercise • Morning Routine Sequence 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. (b) Waking up from bed → 1st
2. (d) Brushing teeth → 2nd
3. (c) Wearing school uniform → 3rd
4. (a) Eating breakfast → 4th

CBSE Step-by-Step Marking Scheme

All 4 correctly sequenced 2 M

Q2 Tick (✓) the activities you do in the morning: (a) Bathing, (b) Brushing teeth, (c) Sleeping at night. Textbook Exercise • Activities Done in Morning 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Bathing (✓)
• (b) Brushing teeth (✓)
• Sleeping in bed is done at night.

CBSE Step-by-Step Marking Scheme

Bathing and brushing ticked 2 M

Q3 Tick (✓) the activities done in the evening: (a) Playing in the park, (b) Waking up from night sleep. Textbook Exercise • Activities Done in Evening 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Playing in the park with friends is done in the evening (✓).

CBSE Step-by-Step Marking Scheme

Playing in park in evening 2 M

Q4 Tick (✓) the activity done at night: (a) Going to sleep, (b) Attending morning school assembly. Textbook Exercise • Activities Done at Night 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Going to sleep in bed is done at night (✓).

CBSE Step-by-Step Marking Scheme

Going to sleep at night 2 M

Q5 Put the steps of making a chapati in order from 1 to 5: Knead dough, Bake on fire, Roll into circle, Take flour in a dish, Light the stove. Textbook Exercise • Chapati Making Steps 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Take flour in a dish
2. Knead dough with water
3. Roll into a circle on chakla
4. Light the stove
5. Bake on fire (tawa)

CBSE Step-by-Step Marking Scheme

Correct 5-step sequence 2 M

Q6 Tick (✓) the activity that takes longer: (a) Filling a bucket with water from a tap, (b) Filling a water glass. Textbook Exercise • Which Activity Takes Longer? (Bucket vs Cup) 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Filling a bucket takes longer (tick ✓) because a bucket holds many liters of water.

CBSE Step-by-Step Marking Scheme

Filling bucket takes longer 2 M

Q7 Which takes less time: Walking to the garden or Running to the garden? Textbook Exercise • Walking vs Running 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Running takes less time because running is faster than walking.

CBSE Step-by-Step Marking Scheme

Running takes less time 2 M

Q8 Rohan goes to a distant city by bicycle. Priya goes by express bus. Who will reach earlier? Textbook Exercise • Cycle vs Bus 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Priya by express bus will reach earlier because buses travel much faster than bicycles.

CBSE Step-by-Step Marking Scheme

Bus reaches earlier 2 M

Q9 When do owls wake up and hunt: during the day or during the night? Let Us Think • Day or Night? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Owls wake up and hunt during the night (nocturnal birds).

CBSE Step-by-Step Marking Scheme

During the night 2 M

Q10 Which meal is eaten in the afternoon: Breakfast or Lunch? Textbook Exercise • Meal Sequencing 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Lunch is eaten in the afternoon.

CBSE Step-by-Step Marking Scheme

Lunch 2 M

Q11 How many days are in a week? Name the first school day of the week. Let Us Do • Days of the Week 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• There are 7 days in a week.
• The first school day of the week is Monday.

CBSE Step-by-Step Marking Scheme

7 days 1 M

Monday 1 M

Q12 On which day do you not go to school? Textbook Exercise • Holiday Day 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Sunday.

CBSE Step-by-Step Marking Scheme

Sunday 2 M

Q13 Which takes more time: boiling a cup of water or freezing water into ice in the refrigerator? Let Us Think • Boiling Water vs Making Ice 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Freezing water into ice takes more time (takes several hours).
• Boiling water takes only 2 to 3 minutes.

CBSE Step-by-Step Marking Scheme

Freezing ice takes more time 2 M

Q14 What color is the sky when the sun rises in the morning? Activity • Morning Sky 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The sky looks golden-yellow, orange, or light blue when the sun rises.

CBSE Step-by-Step Marking Scheme

Golden/orange/light blue 2 M

Q15 At what time of day does grandma usually tell bedtime stories? Textbook Exercise • Story Time 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Grandma tells bedtime stories at night before children go to sleep.

CBSE Step-by-Step Marking Scheme

At night / bedtime 2 M

Q16 Classify into 'Short time' (seconds/minutes) and 'Long time' (hours): (a) Sneezing, (b) Sleeping through the night. Competency Review • Short Time vs Long Time 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) Sneezing → Short time (1 second).
• (b) Sleeping through the night → Long time (8 hours).

CBSE Step-by-Step Marking Scheme

Sneezing = Short time 1 M

Sleeping = Long time 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Making Chapati from Wheat Case Study

Real-World Context: Mother wants to make hot chapatis for lunch. She takes flour from the tin, pours water, kneads the dough, rolls a ball on the rolling board (chakla), and bakes it on the tawa.

Analytical Task: What is the first step in making chapati? Does kneading dough take place before or after baking on the tawa?

1. The first step is taking flour from the tin into a bowl.
2. Kneading the dough takes place before baking on the tawa.

CBSE Assessment Rubric: 1.5 M for taking flour first + 1.5 M for kneading before baking

Unit 2: Math-Magic Classic • Class 1 Mathematics

Chapter 7: Measurement

Longer-Shorter, Taller-Shorter, Heavier-Lighter & Handspans

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Comparing length: Longer vs Shorter, Longest vs Shortest.
Comparing height: Taller vs Shorter, Tallest vs Shortest.
Comparing weight: Heavier vs Lighter, Heaviest vs Lightest.
Measuring length using non-standard body parts: Handspan, Cubit, Foot, and Pace.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (18 Solved Questions)

Q1 Look at two ladders: Ladder A reaches the roof, and Ladder B reaches only the window. Tick (✓) the longer ladder. Textbook Exercise • Longer and Shorter 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Ladder A is longer (tick ✓).

CBSE Step-by-Step Marking Scheme

Ladder A is longer 2 M

Q2 Tick (✓) the shorter rope between Rope X (5 meters) and Rope Y (2 meters). Textbook Exercise • Shorter Rope 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Rope Y is shorter (tick ✓).

CBSE Step-by-Step Marking Scheme

Rope Y is shorter 2 M

Q3 Look at three pencils: Red (15 cm), Blue (10 cm), Green (6 cm). Which pencil is the longest, and which is the shortest? Textbook Exercise • Longest Pencil 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Longest: Red pencil (15 cm).
• Shortest: Green pencil (6 cm).

CBSE Step-by-Step Marking Scheme

Longest = Red 1 M

Shortest = Green 1 M

Q4 Tick (✓) the taller animal between a Giraffe and a Dog. Textbook Exercise • Taller and Shorter 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The Giraffe is taller (tick ✓).

CBSE Step-by-Step Marking Scheme

Giraffe is taller 2 M

Q5 Between a tall clown on stilts and a little girl, tick (✓) the shorter person. Textbook Exercise • Shorter Person 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The little girl is shorter (tick ✓).

CBSE Step-by-Step Marking Scheme

Little girl is shorter 2 M

Q6 Among three palm trees in a row, tick (✓) the tallest tree. Textbook Exercise • Tallest Tree 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Tick the tree with the highest top fronds (the tallest tree).

CBSE Step-by-Step Marking Scheme

Tallest tree identified 2 M

Q7 Look at a rose bush, a potted grass sprout, and a banyan tree. Which is the shortest plant? Textbook Exercise • Shortest Plant 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The grass sprout is the shortest plant.

CBSE Step-by-Step Marking Scheme

Grass sprout is shortest 2 M

Q8 Tick (✓) the lighter object between a shirt and an iron lock. Textbook Exercise • Heavier and Lighter 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The shirt is lighter (tick ✓).
• The iron lock is heavier.

CBSE Step-by-Step Marking Scheme

Shirt is lighter 2 M

Q9 Tick (✓) the heavier fruit between a Pumpkin and a Tomato. Textbook Exercise • Heavier Fruit 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The Pumpkin is heavier (tick ✓).

CBSE Step-by-Step Marking Scheme

Pumpkin is heavier 2 M

Q10 Look at: A water jug, a water glass, and an iron water tank. Which is the heaviest, and which is the lightest? Textbook Exercise • Heaviest Object 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Heaviest: Iron water tank.
• Lightest: Water glass.

CBSE Step-by-Step Marking Scheme

Heaviest = Tank 1 M

Lightest = Glass 1 M

Q11 Measure the length of your desk using your handspan. If you count 6 handspans, what was your measuring tool? Textbook Exercise • Measuring with Handspan 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The measuring tool is your handspan (the distance from stretched thumb to little finger).

CBSE Step-by-Step Marking Scheme

Handspan identified 2 M

Q12 Measure the mat with your footsteps (paces). If the mat is 8 paces long, write the answer. Textbook Exercise • Measuring with Paces 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Length of the mat = 8 paces (footsteps).

CBSE Step-by-Step Marking Scheme

8 paces 2 M

Q13 Measure the width of your eraser in finger-widths. How many fingers wide is it? Textbook Exercise • Measuring with Fingers 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• A standard eraser is approximately 2 to 3 finger-widths.

CBSE Step-by-Step Marking Scheme

2 to 3 fingers 2 M

Q14 Place matchsticks end-to-end along a notebook. If it takes 6 matchsticks, how long is the notebook? Textbook Exercise • Measuring with Matchsticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The notebook is 6 matchsticks long.

CBSE Step-by-Step Marking Scheme

6 matchsticks long 2 M

Q15 A monkey and a rabbit sit on a seesaw. Whose side goes down? Let Us Think • Seesaw Balance 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The monkey's side goes down because the monkey is heavier than the rabbit.

CBSE Step-by-Step Marking Scheme

Monkey's side goes down 1 M

Monkey is heavier 1 M

Q16 Drop a pigeon feather and a clay brick. Which object feels heavier in your hand? Activity • Feather vs Brick 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The clay brick feels much heavier.
• The feather is extremely light.

CBSE Step-by-Step Marking Scheme

Brick is heavier 2 M

Q17 Among ribbons of 5 cm, 12 cm, and 8 cm, which is the longest? Textbook Exercise • Longest Ribbon 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 12 cm ribbon is the longest.

CBSE Step-by-Step Marking Scheme

12 cm ribbon 2 M

Q18 Why is it better to use a plastic ruler rather than footsteps to measure the length of a room accurately? Competency Review • Why Use a Ruler? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
1. Footsteps vary from child to adult.
2. A ruler has fixed centimeters that give the exact same measurement for everyone.

CBSE Step-by-Step Marking Scheme

Footsteps vary 1 M

Ruler is fixed and standard 1 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Measuring the Carpet with Footsteps Case Study

Real-World Context: Meena measures the floor carpet using her footsteps and counts 12 paces. Her brother counts 9 paces on the same carpet.

Analytical Task: Why is Meena's count 12 while her brother's is 9? Whose steps are bigger?

1. Brother's steps are bigger (longer).
2. Because his steps are bigger, fewer steps (9) are needed to cover the carpet.
3. Meena's steps are smaller, so she needed 12 footsteps.

CBSE Assessment Rubric: 1.5 M for brother's steps are bigger + 1.5 M for fewer steps needed

Unit 3: Math-Magic Classic • Class 1 Mathematics

Chapter 8: Numbers from Twenty-one to Fifty

Bundles of 10 and Loose Units, 21-50 Strips & Number Grids

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Counting from 21 to 50 using bundles of 10 and loose sticks.
Writing numerals and number names from Twenty-one to Fifty.
Filling missing numbers in sequences and number strips.
Identifying Tens and Ones digits.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (22 Solved Questions)

Q1 Look at the picture: 2 bundles of 10 matchsticks and 5 loose matchsticks. What number is this? Textbook Exercise • 2 Bundles and 5 Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2 bundles = 20
• 5 loose sticks = 5
• Total = 20 + 5 = 25 (Twenty-five).

CBSE Step-by-Step Marking Scheme

20 + 5 = 25 1 M

Number name Twenty-five 1 M

Q2 Write the number for 3 bundles of 10 and 3 loose sticks. Textbook Exercise • 3 Bundles and 3 Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 tens + 3 ones = 30 + 3 = 33 (Thirty-three).

CBSE Step-by-Step Marking Scheme

33 (Thirty-three) 2 M

Q3 Write the number for 4 bundles of 10 and 0 loose sticks. Textbook Exercise • 4 Bundles and 0 Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 tens + 0 ones = 40 (Forty).

CBSE Step-by-Step Marking Scheme

40 (Forty) 2 M

Q4 Write the number for 4 bundles of 10 and 9 loose sticks. Textbook Exercise • 4 Bundles and 9 Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 tens + 9 ones = 40 + 9 = 49 (Forty-nine).

CBSE Step-by-Step Marking Scheme

49 (Forty-nine) 2 M

Q5 What number is represented by 5 full bundles of 10 matchsticks? Textbook Exercise • 5 Bundles of 10 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 tens = 50 (Fifty).

CBSE Step-by-Step Marking Scheme

50 (Fifty) 2 M

Q6 Fill the missing numbers: 21, __, 23, 24, __, 26, __, 28, 29, 30. Textbook Exercise • Missing Numbers 21 to 30 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Missing numbers: 22, 25, 27.

CBSE Step-by-Step Marking Scheme

Filled 22, 25, 27 2 M

Q7 Fill the missing numbers: 31, 32, __, 34, 35, __, 37, __, 39, 40. Textbook Exercise • Missing Numbers 31 to 40 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Missing numbers: 33, 36, 38.

CBSE Step-by-Step Marking Scheme

Filled 33, 36, 38 2 M

Q8 Fill the missing numbers: 41, __, 43, __, 45, 46, __, 48, 49, 50. Textbook Exercise • Missing Numbers 41 to 50 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Missing numbers: 42, 44, 47.

CBSE Step-by-Step Marking Scheme

Filled 42, 44, 47 2 M

Q9 Break 28 into Tens and Ones. Textbook Exercise • Tens and Ones for 28 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 28 = 2 Tens and 8 Ones.

CBSE Step-by-Step Marking Scheme

2 Tens and 8 Ones 2 M

Q10 Break 45 into Tens and Ones. Textbook Exercise • Tens and Ones for 45 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 45 = 4 Tens and 5 Ones.

CBSE Step-by-Step Marking Scheme

4 Tens and 5 Ones 2 M

Q11 Write the numeral for: 3 Tens and 6 Ones. Textbook Exercise • What Number Has 3 Tens and 6 Ones? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 30 + 6 = 36.

CBSE Step-by-Step Marking Scheme

36 2 M

Q12 Write the numeral for: 4 Tens and 2 Ones. Textbook Exercise • What Number Has 4 Tens and 2 Ones? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 40 + 2 = 42.

CBSE Step-by-Step Marking Scheme

42 2 M

Q13 Write number names for: 21, 22, 23, 24, 25. Textbook Exercise • Number Names 21 to 25 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 21 = Twenty-one
• 22 = Twenty-two
• 23 = Twenty-three
• 24 = Twenty-four
• 25 = Twenty-five

CBSE Step-by-Step Marking Scheme

All 5 spelled correctly 2 M

Q14 Write the spellings for: 30, 40, 50. Textbook Exercise • Number Names 30, 40, 50 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 30 = Thirty
• 40 = Forty
• 50 = Fifty

CBSE Step-by-Step Marking Scheme

Thirty, Forty, Fifty 2 M

Q15 What number comes just after 29? What number comes just after 39? Textbook Exercise • What Comes Just After 29? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Just after 29 is 30.
• Just after 39 is 40.

CBSE Step-by-Step Marking Scheme

After 29 = 30 1 M

After 39 = 40 1 M

Q16 What number comes just before 50? Textbook Exercise • What Comes Just Before 50? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 50 - 1 = 49.

CBSE Step-by-Step Marking Scheme

49 2 M

Q17 What number is between 35 and 37? Textbook Exercise • Between 35 and 37 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The number is 36.

CBSE Step-by-Step Marking Scheme

36 2 M

Q18 Circle the greater number in each pair: (a) 26 and 32, (b) 48 and 41. Textbook Exercise • Circle Greater Number 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 3 tens > 2 tens → 32 is greater.
• (b) Same tens (4), but 8 ones > 1 one → 48 is greater.

CBSE Step-by-Step Marking Scheme

32 circled 1 M

48 circled 1 M

Q19 Students made 3 garlands of 10 roses each and had 5 loose roses. How many roses in total? Word Problem • Flowers for Teacher's Day 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 30 + 5 = 35 roses.

CBSE Step-by-Step Marking Scheme

30 + 5 = 35 roses 2 M

Q20 Match: 2 bundles and 9 sticks → 29; 4 bundles and 7 sticks → 47. Activity • Match Numeral to Picture 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 20 + 9 = 29
• 40 + 7 = 47

CBSE Step-by-Step Marking Scheme

Matches verified 2 M

Q21 How many tens make 50? Mental Math • How Many Tens in 50? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 10 + 10 + 10 + 10 + 10 = 50.
• Exactly 5 tens make 50.

CBSE Step-by-Step Marking Scheme

5 tens 2 M

Q22 Write the skip-counting chain by 5s from 25 to 50: 25, 30, __, __, __, 50. Competency Review • Skip Counting by 5s to 50 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 25, 30, 35, 40, 45, 50.

CBSE Step-by-Step Marking Scheme

35, 40, 45 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Sugarcane Bundles Case Study

Real-World Context: Farmer Ramu ties harvested sugarcane stalks into bundles of 10 stalks each. He has 3 full bundles and 7 loose stalks.

Analytical Task: What total number of sugarcane stalks does Farmer Ramu have? Write the number in expanded form.

1. 3 bundles of 10 = 30. Loose stalks = 7.
2. Total stalks = 30 + 7 = 37 sugarcane stalks.
3. Expanded form: 30 + 7 = 3 tens and 7 ones.

CBSE Assessment Rubric: 1.5 M for 37 stalks + 1.5 M for expanded form (30 + 7)

Unit 3: Math-Magic Classic • Class 1 Mathematics

Chapter 9: Data Handling

Counting Shapes in Pictures, Letter Counts in Names & Frequency

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Counting distinct geometric shapes (triangles, circles, squares, rectangles) in a composite picture.
Identifying which shape occurs the most and which occurs the least.
Counting letters in names of friends.
Finding which letter repeats most frequently across names.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (16 Solved Questions)

Q1 Look at the composite joker picture in the textbook. Count all the Triangles (▲). Textbook Exercise • Counting Triangles in Joker 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Count of triangles in the hat, face, and collar = 8 triangles.

CBSE Step-by-Step Marking Scheme

8 triangles counted 2 M

Q2 Count all the Circles (●) in the joker picture. Textbook Exercise • Counting Circles in Joker 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Count of circles (eyes, nose, buttons, and ball in hand) = 5 circles.

CBSE Step-by-Step Marking Scheme

5 circles counted 2 M

Q3 Count all the Squares (■) in the joker picture. Textbook Exercise • Counting Squares in Joker 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Count of squares on the jacket and shoes = 4 squares.

CBSE Step-by-Step Marking Scheme

4 squares counted 2 M

Q4 Count all the Rectangles (▭) in the joker picture. Textbook Exercise • Counting Rectangles in Joker 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Count of rectangles (arms, legs, torso body) = 6 rectangles.

CBSE Step-by-Step Marking Scheme

6 rectangles counted 2 M

Q5 From the joker shape counts (Triangles: 8, Circles: 5, Squares: 4, Rectangles: 6): Name the shape that occurs the most. Textbook Exercise • Name the Shape that Occurs Most 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Triangle occurs the most (8 times).

CBSE Step-by-Step Marking Scheme

Triangle occurs most 2 M

Q6 From the joker shape counts above: Name the shape that occurs the least. Textbook Exercise • Name the Shape that Occurs Least 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Square occurs the least (4 times).

CBSE Step-by-Step Marking Scheme

Square occurs least 2 M

Q7 Count the number of letters in each name:
(a) SAROJ
(b) RADHA
(c) AARAV
(d) GEETA Textbook Exercise • Letters in Friends' Names 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) SAROJ = 5 letters
• (b) RADHA = 5 letters
• (c) AARAV = 5 letters
• (d) GEETA = 5 letters
All four names have exactly 5 letters.

CBSE Step-by-Step Marking Scheme

All counts correct (5 letters each) 2 M

Q8 Look at the list of friends: RAMESH, SANTOSH, RAJESH, MURLI, ROHAN. How many names have 6 letters? Textbook Exercise • How Many Names Have 5 Letters? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• RAMESH = 6 letters
• SANTOSH = 7 letters
• RAJESH = 6 letters
• MURLI = 5 letters
• ROHAN = 5 letters
• Exactly 2 names (Ramesh, Rajesh) have 6 letters.

CBSE Step-by-Step Marking Scheme

2 names have 6 letters 2 M

Q9 In the list: RAM, ROHIT, RADHA, RANI, AMIT. Which letter comes at the start of most names? Textbook Exercise • Most Common Starting Letter 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Letter 'R' starts 4 out of the 5 names (Ram, Rohit, Radha, Rani).
• 'R' is the most common starting letter.

CBSE Step-by-Step Marking Scheme

Letter 'R' 2 M

Q10 How many times does the letter 'A' appear in the word 'BANANA'? Textbook Exercise • Finding Letter Frequency 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• In B-A-N-A-N-A, the letter 'A' appears 3 times.

CBSE Step-by-Step Marking Scheme

3 times 2 M

Q11 Count fruits in the basket: 4 Apples, 7 Bananas, 2 Melons. Which fruit is greatest in number? Let Us Do • Fruit Chart in Kitchen 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Bananas (7) are greatest in number.

CBSE Step-by-Step Marking Scheme

Bananas (7) 2 M

Q12 From the fruit counts above (Apples: 4, Bananas: 7, Melons: 2), which fruit is the least? Textbook Exercise • Least Number of Fruits 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Melons (2) are the least.

CBSE Step-by-Step Marking Scheme

Melons (2) 2 M

Q13 Watching the road from the window: 5 Cars, 3 Buses, 8 Bicycles pass by. Which vehicle was seen the most? Textbook Exercise • Vehicle Tally on Road 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Bicycles (8) were seen the most.

CBSE Step-by-Step Marking Scheme

Bicycles (8) 2 M

Q14 How many vowels (A, E, I, O, U) are in the name 'INDIA'? Activity • Vowels Count 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• I, I, A are vowels.
• There are 3 vowels in the name INDIA.

CBSE Step-by-Step Marking Scheme

3 vowels (I, I, A) 2 M

Q15 Find the total letters in 'SUN' and 'MOON'. Textbook Exercise • Total Letters 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• SUN = 3 letters
• MOON = 4 letters
• Total = 3 + 4 = 7 letters.

CBSE Step-by-Step Marking Scheme

3 + 4 = 7 letters 2 M

Q16 Draw 4 tally marks for 4 pencils and 6 tally marks for 6 crayons. Which row is longer? Competency Review • Bar Line Comparison 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The row of 6 crayons is longer because 6 > 4.

CBSE Step-by-Step Marking Scheme

Row of 6 crayons is longer 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Joker's Geometric Costume Case Study

Real-World Context: In the circus picture, the joker's funny costume is made entirely of shapes: 8 triangles for the hat and collar, 5 circles for buttons and eyes, 6 rectangles for arms and legs, and 4 squares for the body pockets.

Analytical Task: Which shape is used the most in the joker's costume? Which shape is used the least? How many shapes were used in all?

1. Triangles (8) are used the most.
2. Squares (4) are used the least.
3. Total shapes = 8 + 5 + 6 + 4 = 23 shapes in all.

CBSE Assessment Rubric: 1 M for Triangles (most) + 1 M for Squares (least) + 1 M for total 23 shapes

Unit 3: Math-Magic Classic • Class 1 Mathematics

Chapter 10: Patterns

Extending Sequences, T-Shapes, Arrow Patterns & Number Sequences

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Extending sequences of basic 2D shapes (circles, squares, triangles).
Alternating letter and symbol patterns (T, ⊥, T, ⊥).
Arrow direction patterns (Up, Down, Up, Down).
Number patterns: counting in 1s, 2s, 5s, 10s.
Patterns with dots, leaf prints, and growing geometric shapes.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (18 Solved Questions)

Q1 Complete the pattern: T, ⊥, T, ⊥, T, __, __. Textbook Exercise • Extending T Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The pattern alternates between upright 'T' and upside-down '⊥'.
• Next two symbols: ⊥, T.

CBSE Step-by-Step Marking Scheme

Filled ⊥, then T 2 M

Q2 Complete the sequence: O, X, O, X, O, __, __. Textbook Exercise • Circle and Cross Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The pattern alternates O and X.
• Next symbols: X, O.

CBSE Step-by-Step Marking Scheme

Filled X, then O 2 M

Q3 Fill the next arrows: ↑, ↓, ↑, ↓, ↑, __, __. Textbook Exercise • Arrow Direction Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Next arrows: ↓ (Down), ↑ (Up).

CBSE Step-by-Step Marking Scheme

Down then Up 2 M

Q4 Complete the sequence: ↑↑, ↓↓, ↑↑, ↓↓, __, __. Textbook Exercise • Double Up and Double Down 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Next symbols: ↑↑, ↓↓.

CBSE Step-by-Step Marking Scheme

Double up then double down 2 M

Q5 Extend the pattern: ●, ▲, ●, ▲, ●, __, __. Textbook Exercise • Shape Sequence (Circle & Triangle) 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Next shapes: ▲ (Triangle), ● (Circle).

CBSE Step-by-Step Marking Scheme

Triangle then Circle 2 M

Q6 Look at the dots: (•), (••), (•••), (••••), _____. Draw the next group. Textbook Exercise • Growing Dot Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Rule: Add 1 dot each time.
• Next group: 5 dots (•••••).

CBSE Step-by-Step Marking Scheme

5 dots drawn 2 M

Q7 Look at lines: 1 stick, 2 sticks, 3 sticks, 4 sticks. How many sticks come next? Textbook Exercise • Growing Line Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Rule: Add 1 stick.
• Next is 5 sticks.

CBSE Step-by-Step Marking Scheme

5 sticks 2 M

Q8 Complete the chain: 2, 4, 6, 8, __, __. Textbook Exercise • Number Pattern Counting in 2s 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Adding 2 each time:
• 8 + 2 = 10
• 10 + 2 = 12

CBSE Step-by-Step Marking Scheme

10 and 12 2 M

Q9 Fill the missing numbers: 5, 10, 15, 20, __, __. Textbook Exercise • Number Pattern Counting in 5s 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Adding 5 each time:
• 20 + 5 = 25
• 25 + 5 = 30

CBSE Step-by-Step Marking Scheme

25 and 30 2 M

Q10 Complete the sequence: 10, 20, 30, 40, __, __. Textbook Exercise • Number Pattern Counting in 10s 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 40 + 10 = 50
• 50 + 10 = 60

CBSE Step-by-Step Marking Scheme

50 and 60 2 M

Q11 Fill the missing numbers: 1, 3, 5, 7, __, __. Textbook Exercise • Odd Numbers Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Adding 2 to odd numbers:
• 7 + 2 = 9
• 9 + 2 = 11

CBSE Step-by-Step Marking Scheme

9 and 11 2 M

Q12 Complete the backward count: 20, 19, 18, 17, __, __. Textbook Exercise • Backward Number Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Subtracting 1 each time:
• 17 - 1 = 16
• 16 - 1 = 15

CBSE Step-by-Step Marking Scheme

16 and 15 2 M

Q13 Fill the blank: 50, 40, 30, __, 10. Textbook Exercise • Backward in 10s 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Subtracting 10 each time:
• 30 - 10 = 20.

CBSE Step-by-Step Marking Scheme

20 2 M

Q14 Complete the pattern: AB, CD, EF, __, __. Textbook Exercise • Repeating Letters ABC 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Letter pairs in alphabetical order:
• Next pairs: GH, IJ.

CBSE Step-by-Step Marking Scheme

GH, IJ 2 M

Q15 Morning, Afternoon, Evening, Night, Morning, __, __. What comes next? Textbook Exercise • Day and Night Pattern 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Following the cycle of the day: Afternoon, Evening.

CBSE Step-by-Step Marking Scheme

Afternoon, Evening 2 M

Q16 A leaf is stamped: pointing Left, then Right, then Left, then Right. What direction will the 5th print point? Let Us Do • Alternating Leaf Prints 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The 5th print will point Left.

CBSE Step-by-Step Marking Scheme

Left 2 M

Q17 Draw the next two shapes: ▲, ■, ▲, ■, ▲, __, __. Activity • Triangle and Square Alternating 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Next shapes: ■ (Square), ▲ (Triangle).

CBSE Step-by-Step Marking Scheme

Square then Triangle 2 M

Q18 Look at: 3, 6, 9, 12. What is the secret rule of this pattern? Competency Review • Find the Pattern Rule 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The secret rule is: Add 3 each time (counting by 3s).

CBSE Step-by-Step Marking Scheme

Add 3 each time 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Iron Grill Window Pattern Case Study

Real-World Context: A blacksmith creates an ornamental window grill using alternating upright hearts and inverted hearts: ♡, ♢, ♡, ♢, ♡, ♢.

Analytical Task: What symbol comes next in the grill sequence? If the window frame has 10 upright hearts, how many total symbols are in the row?

1. Following the alternation, the next symbol is an upright heart (♡).
2. Since upright and inverted hearts alternate equally, 10 upright + 10 inverted = 20 total symbols.

CBSE Assessment Rubric: 1.5 M for upright heart + 1.5 M for 20 total symbols

Unit 4: Math-Magic Classic • Class 1 Mathematics

Chapter 11: Numbers

Numbers 51 to 100, Sugarcane Bundles of 10 & 100-Chart

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Extending place value to numbers from 51 to 100.
Grouping by 10s: 5 tens = 50 up to 10 tens = 100.
Writing numerals and number names up to One Hundred.
Completing missing numbers in the 51-100 grid.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (23 Solved Questions)

Q1 Write the number for 5 bundles of 10 matchsticks and 1 loose stick. Textbook Exercise • 5 Bundles and 1 Stick 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 tens + 1 one = 50 + 1 = 51 (Fifty-one).

CBSE Step-by-Step Marking Scheme

51 (Fifty-one) 2 M

Q2 Write the number for 6 bundles of 10 and 5 loose sticks. Textbook Exercise • 6 Bundles and 5 Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 tens + 5 ones = 60 + 5 = 65 (Sixty-five).

CBSE Step-by-Step Marking Scheme

65 (Sixty-five) 2 M

Q3 Write the number for 7 bundles of 10 and 3 loose sticks. Textbook Exercise • 7 Bundles and 3 Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 7 tens + 3 ones = 70 + 3 = 73 (Seventy-three).

CBSE Step-by-Step Marking Scheme

73 (Seventy-three) 2 M

Q4 Write the number for 8 bundles of 10 and 8 loose sticks. Textbook Exercise • 8 Bundles and 8 Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 8 tens + 8 ones = 80 + 8 = 88 (Eighty-eight).

CBSE Step-by-Step Marking Scheme

88 (Eighty-eight) 2 M

Q5 Write the number for 9 bundles of 10 and 9 loose sticks. What is special about this number? Textbook Exercise • 9 Bundles and 9 Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 9 tens + 9 ones = 99 (Ninety-nine).
• 99 is the largest 2-digit number.

CBSE Step-by-Step Marking Scheme

99 (Ninety-nine) 1 M

Largest 2-digit number 1 M

Q6 What number is formed by 10 bundles of 10 matchsticks? Textbook Exercise • 10 Bundles of 10 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 10 tens = 100 (One Hundred).
• 100 is the first 3-digit number.

CBSE Step-by-Step Marking Scheme

100 (One Hundred) 1 M

First 3-digit number 1 M

Q7 Fill the missing numbers: 51, 52, __, 54, __, 56, 57, __, 59, 60. Textbook Exercise • Missing Numbers 51 to 60 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Missing numbers: 53, 55, 58.

CBSE Step-by-Step Marking Scheme

Filled 53, 55, 58 2 M

Q8 Fill the missing numbers: 61, __, 63, 64, __, 66, __, 68, 69, 70. Textbook Exercise • Missing Numbers 61 to 70 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Missing numbers: 62, 65, 67.

CBSE Step-by-Step Marking Scheme

Filled 62, 65, 67 2 M

Q9 Fill the missing numbers: 71, 72, __, 74, __, 76, 77, __, 79, 80. Textbook Exercise • Missing Numbers 71 to 80 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Missing numbers: 73, 75, 78.

CBSE Step-by-Step Marking Scheme

Filled 73, 75, 78 2 M

Q10 Fill the missing numbers: 81, __, 83, 84, __, 86, __, 88, 89, 90. Textbook Exercise • Missing Numbers 81 to 90 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Missing numbers: 82, 85, 87.

CBSE Step-by-Step Marking Scheme

Filled 82, 85, 87 2 M

Q11 Fill the missing numbers: 91, 92, __, 94, __, 96, 97, __, 99, 100. Textbook Exercise • Missing Numbers 91 to 100 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Missing numbers: 93, 95, 98.

CBSE Step-by-Step Marking Scheme

Filled 93, 95, 98 2 M

Q12 Break 64 into Tens and Ones. Textbook Exercise • Tens and Ones for 64 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 64 = 6 Tens and 4 Ones.

CBSE Step-by-Step Marking Scheme

6 Tens and 4 Ones 2 M

Q13 Break 89 into Tens and Ones. Textbook Exercise • Tens and Ones for 89 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 89 = 8 Tens and 9 Ones.

CBSE Step-by-Step Marking Scheme

8 Tens and 9 Ones 2 M

Q14 Write the spellings for: 60, 70, 80, 90. Textbook Exercise • Number Names 60, 70, 80, 90 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 60 = Sixty
• 70 = Seventy
• 80 = Eighty
• 90 = Ninety

CBSE Step-by-Step Marking Scheme

All 4 spelled correctly 2 M

Q15 What number comes just after 79? Textbook Exercise • What Comes Just After 79? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 79 + 1 = 80.

CBSE Step-by-Step Marking Scheme

80 2 M

Q16 What number comes just before 90? Textbook Exercise • What Comes Just Before 90? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 90 - 1 = 89.

CBSE Step-by-Step Marking Scheme

89 2 M

Q17 What number lies between 65 and 67? Textbook Exercise • Between 65 and 67 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The number is 66.

CBSE Step-by-Step Marking Scheme

66 2 M

Q18 Circle the greater number: (a) 54 and 74, (b) 86 and 68. Textbook Exercise • Circle Greater Number (50-100) 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (a) 7 tens > 5 tens → 74 is greater.
• (b) 8 tens > 6 tens → 86 is greater.

CBSE Step-by-Step Marking Scheme

74 circled 1 M

86 circled 1 M

Q19 A jar has 7 bundles of 10 marbles and 5 loose marbles. How many marbles in all? Word Problem • Marbles in Jars 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 70 + 5 = 75 marbles.

CBSE Step-by-Step Marking Scheme

70 + 5 = 75 marbles 2 M

Q20 Match: 10 tens → 100; 5 tens → 50; 8 tens → 80. Activity • Match 10s to Hundreds 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 10 tens = 100
• 5 tens = 50
• 8 tens = 80

CBSE Step-by-Step Marking Scheme

Matches verified 2 M

Q21 Solve: 60 + 10 = __. Mental Math • Adding 10 to 60 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 tens + 1 ten = 7 tens = 70.

CBSE Step-by-Step Marking Scheme

70 2 M

Q22 In a cricket match, a player scores 100 runs. What is this score called? Competency Review • Century in Cricket 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• A score of 100 runs is called a Century.

CBSE Step-by-Step Marking Scheme

Century 2 M

Q23 Write the numbers counting in tens from 10 to 100. Summary Drill • Count by 10s to 100 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 10, 20, 30, 40, 50, 60, 70, 80, 90, 100.

CBSE Step-by-Step Marking Scheme

Complete sequence in tens 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Sugarcane Harvesting Case Study

Real-World Context: Farmer Sham Lal ties sugarcane stalks into bundles of 10 stalks each. He has 6 full bundles and 4 loose stalks on his cart.

Analytical Task: How many sugarcane stalks does Sham Lal have in total? How many bundles will he have if he cuts 6 more stalks?

1. 6 bundles of 10 = 60. Loose stalks = 4. Total = 60 + 4 = 64 sugarcane stalks.
2. With 6 more stalks, loose stalks = 4 + 6 = 10 (which makes 1 new bundle).
3. Total bundles = 6 + 1 = 7 full bundles of 10 (70 stalks).

CBSE Assessment Rubric: 1.5 M for 64 stalks + 1.5 M for 7 full bundles

Unit 4: Math-Magic Classic • Class 1 Mathematics

Chapter 12: Money

Coins, Currency Notes, Combining Coins to Pay Exact Price & Change

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Coins used in India: ₹1, ₹2, ₹5, ₹10.
Notes used in India: ₹10, ₹20, ₹50, ₹100.
Making different amounts using combinations of coins.
Calculating the cost of buying toys and stationery.
Calculating balance change returned by shopkeeper.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (17 Solved Questions)

Q1 Name the four coins shown in the textbook that we use to buy things in India. Textbook Exercise • Common Coins in India 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹1 coin, ₹2 coin, ₹5 coin, and ₹10 coin.

CBSE Step-by-Step Marking Scheme

All 4 coins named 2 M

Q2 How do you pay ₹1 using coins? Textbook Exercise • Make ₹1 Using Coins 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Pay with one ₹1 coin.

CBSE Step-by-Step Marking Scheme

One ₹1 coin 2 M

Q3 Show two different ways to pay ₹2 using coins. Textbook Exercise • Make ₹2 in Two Different Ways 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Way 1: One ₹2 coin.
• Way 2: Two ₹1 coins (₹1 + ₹1 = ₹2).

CBSE Step-by-Step Marking Scheme

Way 1: One ₹2 coin 1 M

Way 2: Two ₹1 coins 1 M

Q4 How can you pay ₹3 using ₹1 and ₹2 coins? Textbook Exercise • Make ₹3 Using Coins 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• One ₹2 coin and one ₹1 coin (₹2 + ₹1 = ₹3).

CBSE Step-by-Step Marking Scheme

₹2 + ₹1 = ₹3 2 M

Q5 Show two ways to pay ₹4 using coins. Textbook Exercise • Make ₹4 Using Coins 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Way 1: Two ₹2 coins (₹2 + ₹2 = ₹4).
• Way 2: Four ₹1 coins (₹1 + ₹1 + ₹1 + ₹1 = ₹4).

CBSE Step-by-Step Marking Scheme

Two ₹2 coins 1 M

Four ₹1 coins 1 M

Q6 Show three ways to pay ₹5 using coins. Textbook Exercise • Make ₹5 in Different Ways 3 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Way 1: One ₹5 coin.
• Way 2: Two ₹2 coins and one ₹1 coin (₹2 + ₹2 + ₹1 = ₹5).
• Way 3: Five ₹1 coins.

CBSE Step-by-Step Marking Scheme

Three valid coin combinations 3 M

Q7 How do you pay ₹6 using a ₹5 coin and a ₹1 coin? Textbook Exercise • Make ₹6 Using Coins 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹5 + ₹1 = ₹6.

CBSE Step-by-Step Marking Scheme

₹5 + ₹1 = ₹6 2 M

Q8 Name three currency notes shown in your textbook. Textbook Exercise • Currency Notes in India 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹10 note, ₹20 note, ₹50 note (and ₹100 note).

CBSE Step-by-Step Marking Scheme

Three notes named 2 M

Q9 A paper kite costs ₹5. If you buy 2 kites, how much money do you need? Textbook Exercise • Cost of a Kite 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹5 + ₹5 = ₹10.

CBSE Step-by-Step Marking Scheme

₹5 + ₹5 = ₹10 2 M

Q10 A pen costs ₹7 and an eraser costs ₹2. What is the total cost? Textbook Exercise • Cost of Pen and Eraser 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹7 + ₹2 = ₹9.

CBSE Step-by-Step Marking Scheme

₹7 + ₹2 = ₹9 2 M

Q11 Sita buys a pencil for ₹6 and pays with a ₹10 note. How much change does she receive? Textbook Exercise • Change from ₹10 Note 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹10 - ₹6 = ₹4 change.

CBSE Step-by-Step Marking Scheme

₹10 - ₹6 = ₹4 2 M

Q12 Describe what happens when you rub a pencil over paper with a coin beneath. Textbook Exercise • Coin Rubbing Impression 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The raised metal number (like 5 or 10) and the national emblem emboss clearly on the paper.

CBSE Step-by-Step Marking Scheme

Number and emblem emboss on paper 2 M

Q13 Which three coins make ₹8? Let Us Think • Can You Pay ₹8 with Three Coins? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• One ₹5 coin, one ₹2 coin, and one ₹1 coin.
• ₹5 + ₹2 + ₹1 = ₹8.

CBSE Step-by-Step Marking Scheme

₹5 + ₹2 + ₹1 = ₹8 2 M

Q14 Match: A ruler for ₹5 → ₹5 coin; A storybook for ₹20 → ₹20 note. Activity • Match Price Tags 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Ruler = ₹5 coin
• Storybook = ₹20 note

CBSE Step-by-Step Marking Scheme

Matches verified 2 M

Q15 One packet of glucose biscuits costs ₹5. How much do two packets cost? Word Problem • Two Packets of Biscuits 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹5 + ₹5 = ₹10.

CBSE Step-by-Step Marking Scheme

₹5 + ₹5 = ₹10 2 M

Q16 What animal symbol is engraved on Indian coins? Textbook Exercise • National Emblem on Coins 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• The Lion Capital of Ashoka (Four Lions) is engraved on Indian coins.

CBSE Step-by-Step Marking Scheme

Lion Capital / Lions 2 M

Q17 Aarav saves two ₹10 notes in his piggy bank. How much money has he saved? Competency Review • Piggy Bank Savings 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• ₹10 + ₹10 = ₹20.

CBSE Step-by-Step Marking Scheme

₹20 saved 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Village Fair Toy Stall Case Study

Real-World Context: At the village fair, a clay flute costs ₹8 and a paper pinwheel costs ₹4. Meena has a ₹20 note in her purse.

Analytical Task: What is the total cost of the flute and pinwheel? How much change should the stall owner give back to Meena?

1. Total cost = ₹8 + ₹4 = ₹12.
2. Change returned = ₹20 - ₹12 = ₹8 (e.g. a ₹5 coin, a ₹2 coin, and a ₹1 coin).

CBSE Assessment Rubric: 1.5 M for ₹8 + ₹4 = ₹12 + 1.5 M for ₹20 - ₹12 = ₹8 change

Unit 4: Math-Magic Classic • Class 1 Mathematics

Chapter 13: How Many

Counting Beads, Bundles, Stick Totals, Number Names & Word Problems

Open Dedicated Chapter Page ↗

Chapter Highlights, Key Concepts & Visual Models

Counting beads on a necklace and loose beads.
Counting bundles of 10 and loose sticks to write numerals.
Writing number names from given collections.
Solving simple everyday word problems combining groups.

📖 NCERT Textbook Exercise Solutions & Step-by-Step Working (16 Solved Questions)

Q1 Look at the picture: 3 bundles of 10 sticks and 7 loose sticks. Write the numeral. Textbook Exercise • How Many Sticks in Bundles? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 3 tens + 7 ones = 30 + 7 = 37.

CBSE Step-by-Step Marking Scheme

Numeral 37 2 M

Q2 Write the numeral for 4 bundles of 10 and 5 loose sticks. Textbook Exercise • 4 Bundles and 5 Sticks 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 tens + 5 ones = 40 + 5 = 45.

CBSE Step-by-Step Marking Scheme

Numeral 45 2 M

Q3 A string has 10 beads. There are 2 full strings and 4 loose beads. How many beads in all? Textbook Exercise • How Many Beads on String? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2 tens + 4 ones = 20 + 4 = 24 beads.

CBSE Step-by-Step Marking Scheme

24 beads 2 M

Q4 There are 2 bunches of 10 bananas and 3 loose bananas. Write the total count. Textbook Exercise • How Many Bananas? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 2 tens + 3 ones = 20 + 3 = 23 bananas.

CBSE Step-by-Step Marking Scheme

23 bananas 2 M

Q5 Write the number name for 15. Textbook Exercise • Write the Number Name for 15 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 15 = Fifteen.

CBSE Step-by-Step Marking Scheme

Fifteen 2 M

Q6 In the number 24, how many tens are there? Textbook Exercise • How Many Tens in 24? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• In 24, there are 2 tens (and 4 ones).

CBSE Step-by-Step Marking Scheme

2 tens 2 M

Q7 Which number is bigger: 13 or 26? Textbook Exercise • Which is Bigger: 13 or 26? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 26 has 2 tens, while 13 has only 1 ten.
• Therefore, 26 is bigger.

CBSE Step-by-Step Marking Scheme

26 is bigger 2 M

Q8 If 1 toffee costs ₹1, how much do 3 toffees cost? Textbook Exercise • Cost of 3 Toffees 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 1 toffee = ₹1
• 3 toffees = 1 + 1 + 1 = ₹3.

CBSE Step-by-Step Marking Scheme

₹3 2 M

Q9 Tree A has 6 birds. Tree B has 3 birds. How many birds in total? Textbook Exercise • How Many Birds in Trees? 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 6 + 3 = 9 birds.

CBSE Step-by-Step Marking Scheme

6 + 3 = 9 birds 2 M

Q10 A picture shows a girl holding 5 red flowers and giving 2 to her teacher. Write the math sentence. Textbook Exercise • Develop a Story on a Picture 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• Math sentence: 5 - 2 = 3 flowers left.

CBSE Step-by-Step Marking Scheme

5 - 2 = 3 flowers 2 M

Q11 Write Tens and Ones for 43. Let Us Do • Tens and Ones for 43 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 43 = 4 Tens and 3 Ones.

CBSE Step-by-Step Marking Scheme

4 Tens and 3 Ones 2 M

Q12 Draw 8 dots in a row and match with the numeral 8. Activity • Match Dots to Numeral 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• (••••••••) = 8 (Eight).

CBSE Step-by-Step Marking Scheme

8 dots matched to 8 2 M

Q13 Write the spelling of 47. Textbook Exercise • Number Name for 47 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 47 = Forty-seven.

CBSE Step-by-Step Marking Scheme

Forty-seven 2 M

Q14 There are 4 goats eating grass. 2 more goats join them. How many goats altogether? Textbook Exercise • Counting Goats 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 4 + 2 = 6 goats.

CBSE Step-by-Step Marking Scheme

4 + 2 = 6 goats 2 M

Q15 How many bundles of 10 make 50? Textbook Exercise • Bundles of 10 for 50 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 5 bundles of 10 make 50.

CBSE Step-by-Step Marking Scheme

5 bundles 2 M

Q16 Name 3 important things you learned in Class 1 Math-Magic. Competency Review • Summary of All Math Concepts 2 Marks

✅ Step-by-Step Model Answer & Solution:

Step-by-Step Solution:
• 1. Counting numbers from 1 to 100 using tens and ones.
• 2. Addition and subtraction facts.
• 3. Shapes, patterns, time, and money.

CBSE Step-by-Step Marking Scheme

Three core math areas summarized 2 M

🌟 NEP 2020 Competency-Based Case Study (CBQ)

Pearl Necklace Project Case Study

Real-World Context: Razia strings 3 necklaces with 10 pearls each and has 9 loose pearls left on her wooden craft tray.

Analytical Task: How many total pearls does Razia have? How many more loose pearls does she need to complete a 4th necklace of 10?

1. 3 necklaces of 10 = 30 pearls. Loose pearls = 9. Total = 30 + 9 = 39 pearls in all.
2. To make 10 from 9 pearls, she needs: 10 - 9 = 1 more pearl.

CBSE Assessment Rubric: 1.5 M for 30 + 9 = 39 pearls + 1.5 M for 10 - 9 = 1 pearl

Frequently Asked Questions — Class 1 Mathematics NCERT Solutions

❓ Which textbooks are covered under Class 1 NCERT Mathematics?

Both official NCERT Class 1 Mathematics textbooks are fully covered: the new NEP 2020 textbook Joyful Mathematics (13 chapters) and the classic CBSE textbook Math-Magic Book 1 (13 chapters), totaling 26 chapters.

❓ Are labeled diagrams and visual models included in these solutions?

Yes, every single chapter features high-resolution vector SVG diagrams illustrating spatial positions, shapes, bundles of 10, addition, subtraction, money coins, and patterns.

❓ Do these solutions contain official CBSE step-by-step marking rubrics?

Yes, each solution provides a transparent step marking scheme showing exactly how marks are awarded for counting, method of grouping, calculation steps, and final units.