Chapter 4 of 13
Chapter 4: Making 10
Combinations of 10, Ten-Frames, Bundling & Tens/Ones | CBSE Session 2026–27
Core Pedagogical Competencies & Concepts
- 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.
All Textbook Exercises & In-Text Tasks (17 Questions)
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Q1
Textbook Exercise • Ten-Frame Pairs
Look at the 10-frame: 7 boxes have red counters. How many empty boxes are left to make 10?
[2 Marks]
✅ Step-by-Step Solution & Working
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.
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
Let Us Do • Finger Counting to 10
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?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Total fingers on both hands = 5 + 5 = 10 fingers.
• Fold 4 fingers down: 10 - 4 = 6 fingers upright.
• 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
Textbook Exercise • Pairs that Make 10
Fill in the blanks to make 10:
(a) 1 + __ = 10
(b) 2 + __ = 10
(c) 5 + __ = 10
(d) 8 + __ = 10
[2 Marks]
(a) 1 + __ = 10
(b) 2 + __ = 10
(c) 5 + __ = 10
(d) 8 + __ = 10
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• (a) 1 + 9 = 10
• (b) 2 + 8 = 10
• (c) 5 + 5 = 10
• (d) 8 + 2 = 10
• (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
Hands-on Activity • Bundling Sticks
Rohan has 10 loose matchsticks. He ties them together with a rubber band. What do we call this tied bundle in mathematics?
[2 Marks]
✅ Step-by-Step Solution & Working
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.
• 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
Textbook Exercise • Numbers 10 to 20
A bundle of 10 pencils and 3 loose pencils makes what number? Write the numeral and number name.
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• 1 bundle of 10 = 10
• 3 loose pencils = 3
• 10 + 3 = 13.
• Number name: Thirteen.
• 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
Let Us Do • 10 and More
Write the number for:
(a) 10 and 1
(b) 10 and 5
(c) 10 and 7
(d) 10 and 10
[2 Marks]
(a) 10 and 1
(b) 10 and 5
(c) 10 and 7
(d) 10 and 10
✅ Step-by-Step Solution & Working
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)
• (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
Textbook Exercise • Circle Groups of 10
Look at 14 ice cream cones. Circle a group of 10 cones. How many cones are left outside the circle?
[2 Marks]
✅ Step-by-Step Solution & Working
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.
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
Let Us Think • Number 10 Rainbow Pair
If you have 6 blue marbles, how many yellow marbles must you add to make a full bowl of 10 marbles?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Blue marbles = 6
• Total needed = 10
• Yellow marbles = 10 - 6 = 4 yellow marbles.
• 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
Textbook Exercise • Tens and Ones Table
Fill in Tens and Ones for: (a) 18, (b) 12.
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• (a) 18 = 1 Ten and 8 Ones
• (b) 12 = 1 Ten and 2 Ones
• (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
Let Us Do • Number Strip 10 to 20
Fill the missing numbers: 10, 11, __, 13, __, 15, 16, __, 18, 19, 20.
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
Counting from 10 to 20 sequentially:
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20.
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
Textbook Exercise • Greater and Smaller in Teens
Circle the greater number in each pair: (a) 11 and 16, (b) 19 and 15.
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• (a) 16 is greater than 11 → Circle 16.
• (b) 19 is greater than 15 → Circle 19.
• (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
Word Problem • Eggs in a Carton
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?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Eggs in tray = 10 (1 ten)
• Extra eggs = 6 (6 ones)
• Total eggs = 10 + 6 = 16 eggs.
• 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
Let Us Think • How Many Ones in 20?
How many tens make the number 20? How many bundles of 10 matchsticks would you tie?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• 10 + 10 = 20.
• Therefore, 2 tens make 20.
• You would tie 2 bundles of 10 matchsticks with 0 loose ones.
• 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
Textbook Exercise • What Comes Just After 19?
What number comes just before 15? What number comes just after 19?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Just before 15 is 14.
• Just after 19 is 20.
• 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
Activity • Match Numeral to Ten-Frame
Match: (1) Full 10-frame and 2 dots → 12. (2) Full 10-frame and 5 dots → 15.
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• 10 + 2 = 12
• 10 + 5 = 15
• 10 + 2 = 12
• 10 + 5 = 15
CBSE Step-by-Step Marking Scheme
Correct matches verified
2 M
Q16
Competency Drill • Smallest in the Group
Find the smallest number among: 13, 17, 10, 15.
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Comparing: 10 < 13 < 15 < 17.
• The smallest number is 10.
• Comparing: 10 < 13 < 15 < 17.
• The smallest number is 10.
CBSE Step-by-Step Marking Scheme
Identified 10 as smallest
2 M
Q17
Let Us Do • Bead String of 10
Draw a necklace with 10 beads: color 5 red and 5 green. Does 5 + 5 equal 10?
[2 Marks]
✅ Step-by-Step Solution & Working
Step-by-Step Solution:
• Yes, 5 red beads + 5 green beads = 10 beads.
• 5 and 5 are doubles that make 10.
• 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
Making Bead Garlands Case Study
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?
Evaluation & Model Answer:
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).
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).
Rubric: 1.5 M for 10 - 6 = 4 beads + 1.5 M for 8 < 10 analysis