Number Play
CBSE · Class 7 · Mathematics
Most important questions from Number Play for CBSE Class 7 Mathematics board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
Which of the following statements about parity are correct?
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Sum of two odd numbers is even, Sum of an odd and even number is odd, Product of two odd numbers is odd
Odd + Odd = Even (pairs form), Even + Even = Even, Odd + Even = Odd (one leftover), Odd × Odd = Odd, and three odds sum to odd.
If the centre of a 3×3 magic square using numbers 1-9 is 5, what is the magic sum?
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15
Sum of 1-9 is 45. In a magic square, each row sum equals 45÷3 = 15.
Which numbers can appear at the center of a 3×3 magic square using digits 1-9?
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Only 5
The center appears in 4 lines (2 diagonals, 1 row, 1 column). Only 5 can satisfy all required sums of 15.
What is the parity of the expression 4n + 7 for any integer n?
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Always odd
4n is always even (multiple of 4). Even + 7 (odd) = Odd. So 4n + 7 is always odd.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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