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Question 1 - Page 132 - Small Squares in Grids (Parity in Multiplication) - Chapter 6 Class 7 - Number Play - Ganita Prakash
Last updated at October 16, 2025 by Teachoo
Small Squares in Grids (Parity in Multiplication)
Class 7 (Ganita Prakash 1, 2 & old NCERT)
Chapter 6 Class 7 - Number Play - Ganita Prakash
- Numbers can Tell us Things, Supercells
- Parity
- Figure it out - Page 131
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Small Squares in Grids (Parity in Multiplication)
- Parity of Expressions
- Some Explorations in Grids
- Magic Square
- Figure it out - Page 136
- Generalising 3 × 3 Magic Square
- First ever 4 × 4 Magic Square
- Magic Squares in History and Culture
- Virahāṅka Fibonacci Numbers
- Digits in Disguise
- Figure it out - Page 143, 144
Transcript
Question 1 - Page 132 Find the parity of the number of small squares in these grids: (a) 27 × 13 (b) 42 × 78 (c) 135 × 654 (a) 27 × 13 27 is odd. 13 is odd. Since odd × odd = odd, the total number of small squares is odd. (b) 42 × 78 42 is even. Since one of the numbers is even, we don't even need to check the other one. The result will be even. The total number of small squares is even. (c) 135 × 654 135 is odd. 654 is even. Since odd × even = even, the total number of small squares is even.
