NCERT Class 1 Mathematics • Classic CBSE

Chapter 9: Data Handling

Q: Look at the composite joker picture in the textbook. Count all the Triangles (▲).

Step-by-Step Solution:• Count of triangles in the hat, face, and collar = 8 triangles.

Q: Count all the Circles (●) in the joker picture.

Step-by-Step Solution:• Count of circles (eyes, nose, buttons, and ball in hand) = 5 circles.

Q: Count all the Squares (■) in the joker picture.

Step-by-Step Solution:• Count of squares on the jacket and shoes = 4 squares.

Q: Count all the Rectangles (▭) in the joker picture.

Step-by-Step Solution:• Count of rectangles (arms, legs, torso body) = 6 rectangles.

Q: From the joker shape counts (Triangles: 8, Circles: 5, Squares: 4, Rectangles: 6): Name the shape that occurs the most.

Step-by-Step Solution:• Triangle occurs the most (8 times).

Q: From the joker shape counts above: Name the shape that occurs the least.

Step-by-Step Solution:• Square occurs the least (4 times).

Q: Count the number of letters in each name:(a) SAROJ(b) RADHA(c) AARAV(d) GEETA

Step-by-Step Solution:• (a) SAROJ = 5 letters• (b) RADHA = 5 letters• (c) AARAV = 5 letters• (d) GEETA = 5 lettersAll four names have exactly 5 letters.

Q: Look at the list of friends: RAMESH, SANTOSH, RAJESH, MURLI, ROHAN. How many names have 6 letters?

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.

Q: In the list: RAM, ROHIT, RADHA, RANI, AMIT. Which letter comes at the start of most names?

Step-by-Step Solution:• Letter 'R' starts 4 out of the 5 names (Ram, Rohit, Radha, Rani).• 'R' is the most common starting letter.

Q: How many times does the letter 'A' appear in the word 'BANANA'?

Step-by-Step Solution:• In B-A-N-A-N-A, the letter 'A' appears 3 times.

Counting Shapes in Pictures, Letter Counts in Names & Frequency | CBSE Session 2026–27

Core Pedagogical Competencies & Concepts

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.

All Textbook Exercises & In-Text Tasks (16 Questions)

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Q1 Textbook Exercise • Counting Triangles in Joker

Look at the composite joker picture in the textbook. Count all the Triangles (▲).

[2 Marks]

✅ Step-by-Step Solution & Working

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 Textbook Exercise • Counting Circles in Joker

Count all the Circles (●) in the joker picture.

[2 Marks]

✅ Step-by-Step Solution & Working

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 Textbook Exercise • Counting Squares in Joker

Count all the Squares (■) in the joker picture.

[2 Marks]

✅ Step-by-Step Solution & Working

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 Textbook Exercise • Counting Rectangles in Joker

Count all the Rectangles (▭) in the joker picture.

[2 Marks]

✅ Step-by-Step Solution & Working

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 Textbook Exercise • Name the Shape that Occurs Most

From the joker shape counts (Triangles: 8, Circles: 5, Squares: 4, Rectangles: 6): Name the shape that occurs the most.

[2 Marks]

✅ Step-by-Step Solution & Working

Step-by-Step Solution:
• Triangle occurs the most (8 times).

CBSE Step-by-Step Marking Scheme

Triangle occurs most 2 M

Q6 Textbook Exercise • Name the Shape that Occurs Least

From the joker shape counts above: Name the shape that occurs the least.

[2 Marks]

✅ Step-by-Step Solution & Working

Step-by-Step Solution:
• Square occurs the least (4 times).

CBSE Step-by-Step Marking Scheme

Square occurs least 2 M

Q7 Textbook Exercise • Letters in Friends' Names

Count the number of letters in each name:
(a) SAROJ
(b) RADHA
(c) AARAV
(d) GEETA

[2 Marks]

✅ Step-by-Step Solution & Working

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 Textbook Exercise • How Many Names Have 5 Letters?

Look at the list of friends: RAMESH, SANTOSH, RAJESH, MURLI, ROHAN. How many names have 6 letters?

[2 Marks]

✅ Step-by-Step Solution & Working

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 Textbook Exercise • Most Common Starting Letter

In the list: RAM, ROHIT, RADHA, RANI, AMIT. Which letter comes at the start of most names?

[2 Marks]

✅ Step-by-Step Solution & Working

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 Textbook Exercise • Finding Letter Frequency

How many times does the letter 'A' appear in the word 'BANANA'?

[2 Marks]

✅ Step-by-Step Solution & Working

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 Let Us Do • Fruit Chart in Kitchen

Count fruits in the basket: 4 Apples, 7 Bananas, 2 Melons. Which fruit is greatest in number?

[2 Marks]

✅ Step-by-Step Solution & Working

Step-by-Step Solution:
• Bananas (7) are greatest in number.

CBSE Step-by-Step Marking Scheme

Bananas (7) 2 M

Q12 Textbook Exercise • Least Number of Fruits

From the fruit counts above (Apples: 4, Bananas: 7, Melons: 2), which fruit is the least?

[2 Marks]

✅ Step-by-Step Solution & Working

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

CBSE Step-by-Step Marking Scheme

Melons (2) 2 M

Q13 Textbook Exercise • Vehicle Tally on Road

Watching the road from the window: 5 Cars, 3 Buses, 8 Bicycles pass by. Which vehicle was seen the most?

[2 Marks]

✅ Step-by-Step Solution & Working

Step-by-Step Solution:
• Bicycles (8) were seen the most.

CBSE Step-by-Step Marking Scheme

Bicycles (8) 2 M

Q14 Activity • Vowels Count

How many vowels (A, E, I, O, U) are in the name 'INDIA'?

[2 Marks]

✅ Step-by-Step Solution & Working

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 Textbook Exercise • Total Letters

Find the total letters in 'SUN' and 'MOON'.

[2 Marks]

✅ Step-by-Step Solution & Working

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 Competency Review • Bar Line Comparison

Draw 4 tally marks for 4 pencils and 6 tally marks for 6 crayons. Which row is longer?

[2 Marks]

✅ Step-by-Step Solution & Working

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

Joker's Geometric Costume Case Study

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?

Evaluation & Model Answer:

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.

Rubric: 1 M for Triangles (most) + 1 M for Squares (least) + 1 M for total 23 shapes