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Mental Calculations with Square Numbers

In this worksheet, students add together square numbers in their heads.

'Mental Calculations with Square Numbers' worksheet

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Understand Integer Powers/Real Roots

Difficulty level:  

Worksheet Overview

This worksheet is about square numbers.


Remember that to square a number, you simply multiply it by itself.

So 52 = 5 x 5 = 25


You should know the first few square numbers off by heart.

1, 4, 9, 16, 25, 36, 49,, 64, 81, 100, 121, 144



Work the following out in your head.

42 + 32  = 



16 + 9 = 25

42 + 32  = 



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