Addition and Subtraction of Square Numbers

In this worksheet, students add together square numbers. They should try the calculations mentally first.

Key stage: KS 2

Year: Year 5 11+ worksheets

Curriculum topic: Maths and Numerical Reasoning

Curriculum subtopic: Square Numbers

Difficulty level:

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Worksheet Overview

For this worksheet, it will be useful for you to know the square numbers off by heart.

1² = 1

2² = 4

3² = 9

4² = 16

5² = 25

6² = 36

7² = 49

8² = 64

9² = 81

10² = 100

11² = 121

12² = 144

It's also useful to know that 15² = 225

Example

Work out the following mentally.

5² + 10 =

25 + 10 = 35

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Preview activity

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