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Square Roots

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

'Square Roots' worksheet

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Understand Integer Powers/Real Roots

Difficulty level:  

Worksheet Overview

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

 

Answer

√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

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

Work out:

 

√16

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

Work out:

 

√1

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

Work out:

 

√49

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

Work out:

 

√81

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

Work out:

 

√400

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

Work out:

 

√2500

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

Work out:

 

√8100

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

Work out:

 

√0

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

Work out:

 

√10000

CORRECT ANSWER
100
EDDIE SAYS
What number do I have to multiply by itself to get 10000?
---- OR ----

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