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CBSE · Class 7 · Mathematics

Number Play

Standard difficulty · 20 questions · 40 marks

Name: Date: Score: ____ / 40

Show your working for Sections B and C. Answers are on the last page — try every question first!

Section A — Choose the correct answer8 × 1 = 8 marks
1.
The sum of 2 odd numbers and 6 even numbers is always:
  1. a multiple of 3
  2. odd
  3. zero
  4. even
2.
Without multiplying, is 84 × 81 × 73 even or odd?
  1. odd
  2. neither
  3. even
  4. you have to multiply to tell
3.
The sum of two odd numbers is always:
  1. prime
  2. odd
  3. a multiple of 4
  4. even
4.
A 3 × 3 magic square uses the numbers 8 to 16. Its magic sum is:
  1. 12
  2. 108
  3. 36
  4. 39
5.
In how many ways can a rhythm of 13 beats be made from short (1 beat) and long (2 beat) sounds?
  1. 26
  2. 233
  3. 377
  4. 610
6.
How many odd numbers are there from 26 to 63?
  1. 37
  2. 19
  3. 20
  4. 18
7.
A 2-digit number plus the number with its digits reversed is always a multiple of:
  1. 2
  2. 9
  3. 11
  4. 10
8.
A row of a magic square with magic sum 78 reads 30, 34, ☐. The missing number is:
  1. 13
  2. 18
  3. 14
  4. 64
Section B — Short answer8 × 2 = 16 marks
9.
Without adding, is 382 + 482 + 442 + 102 + 418 even or odd? Explain.
10.
Complete the magic square (rows separated by /): 64 ☐ 54 / ☐ 49 ☐ / 44 69 34. What is the magic sum?
11.
Each number is the sum of the two before it. Write the next three: 20, 36, 56, 92, …
12.
Find two numbers next to each other (consecutive) that add up to 447.
13.
94 + 49 = 143. Show that the sum is a multiple of 11 and find the sum of the digits of 94.
14.
How many ways are there to fill 9 beats with 1-beat and 2-beat sounds?
15.
Is the sum of all the numbers from 41 to 120 even or odd? How many of them are odd?
16.
A 3 × 3 magic square uses 16, 22, 28, … (nine numbers going up by 6). What is the centre number and the magic sum?
Section C — Word problems4 × 4 = 16 marks
17.
Ananya plays a drum for 5 beats, using short sounds (1 beat) and long sounds (2 beats). In how many different ways can the 5 beats be filled? How many ways would there be for one beat more?
18.
Raffle tickets are numbered 1 to 92. What is the total of all the odd-numbered tickets? Is that total even or odd?
19.
Meera fills a 3 × 3 magic square with the numbers 15 to 23. What number must go in the centre, and what is the magic sum?
20.
Rahul takes a 2-digit number, reverses its digits and subtracts the smaller from the larger. The answer is 18. What is the difference between the two digits? Give one number that works.
AmbifulWorksheets
Practice that never repeats
CBSE · Class 7 · Mathematics

Answer key

Number Play · AW-7M-NPL-2026-V1 · For parents — fold back or tear off before handing the sheet to your child.

QAnswerWorking
1(d) even2 odd numbers give an even total; even numbers do not change it
2(c) evenone even factor makes the product even
3(d) evenodd + odd = even
4(c) 36total 108 ÷ 3 rows = 36
5(c) 377the Virahanka numbers 1, 2, 3, 5, 8, …: the 13th is 377
6(b) 19from 27 to 63
7(c) 11for example 47 + 74 = 121
8(c) 1478 minus the other two
9even0 odd numbers in the sum
1029, 39, 59; sum 147find a full line for the magic sum, then fill each gap
11148, 240, 38856 + 92 = 148
12223 and 224(447 − 1) ÷ 2 = 223
13143 = 11 × 13; digit sum 1310a + b + 10b + a = 11(a + b)
1455the 9th Virahanka number (1, 2, 3, 5, 8, …)
15even; 40 odd numbersthe parity of a sum depends only on how many odd numbers there are
16centre 40; sum 120the centre is the middle number; sum = 3 × centre
178; 135 + 3 = 8
182116; even46 odd numbers add up to 46 × 46
1919; 57total 171, ÷ 3 = 57; the centre is the middle number
202; for example 20the answer is always 9 × (difference of digits): 18 ÷ 9 = 2