Square Roots

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

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Understand Integer Powers/Real Roots

Difficulty level:

QUESTION 1 of 10

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 √4900

√49 = 7 because 72 = 49

√4900 = 70 because 70= 7 x 10 x 7 x 10 = 72 x 102

Work out:

√9

Work out:

√16

Work out:

√1

Work out:

√49

Work out:

√81

Work out:

√400

Work out:

√2500

Work out:

√8100

Work out:

√0

Work out:

√10000

• Question 1

Work out:

√9

3
EDDIE SAYS
What number do I have to multiply by itself to get 9?
• Question 2

Work out:

√16

4
EDDIE SAYS
What number do I have to multiply by itself to get 16?
• Question 3

Work out:

√1

1
EDDIE SAYS
What number do I have to multiply by itself to get 1?
• Question 4

Work out:

√49

7
EDDIE SAYS
What number do I have to multiply by itself to get 49?
• Question 5

Work out:

√81

9
EDDIE SAYS
What number do I have to multiply by itself to get 81?
• Question 6

Work out:

√400

20
EDDIE SAYS
What number do I have to multiply by itself to get 400?
• Question 7

Work out:

√2500

50
EDDIE SAYS
What number do I have to multiply by itself to get 2500?
• Question 8

Work out:

√8100

90
EDDIE SAYS
What number do I have to multiply by itself to get 8100?
• Question 9

Work out:

√0

0
EDDIE SAYS
What number do I have to multiply by itself to get 0?
• Question 10

Work out:

√10000

100
EDDIE SAYS
What number do I have to multiply by itself to get 10000?
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