# Calculate Square Roots

In this worksheet, students will state the square roots of perfect squares.

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Understand Integer Powers/Real Roots

Difficulty level:

#### Worksheet Overview

The words squared and square root are opposites.

You should know that 6 squared = 36 because 6 x 6 = 36

We write this as 62 = 36

And so the square root of 36 = 6

We write this as √36 = 6

Example

Work out √49 and √4,900

√49 = 7 because 72 = 49

√4,900 = 70 because 70= 7 x 10 x 7 x 10 = 72 x 102

Does that make sense?

Let's try some questions now.

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