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'Square root' is often referred to as the opposite of 'square'. The square of 3 is 9 whilst the square root of 9 is 3. It might seem a little confusing at first but this Math quiz will help you sort out your squares from your square roots!

1.

Which of these numbers has a whole number as a square root?

30

32

34

36

6 x 6 = 36

2.

What is the square root of 81?

3 or -3

6 or -6

9 or -9

12 or -12

9 x 9 = 81 AND -9 x -9 = 81

3.

What is the square root of 100?

2 or -2

10 or -10

25 or -15

50 or -50

4.

You are given the two numbers '3 squared' and 'the square root of 100'. How do they relate to each other?

3 squared is the larger number

The square root of 100 is the larger number

They are both the same

There is no way of telling

The square root of 100 could be either 10 or -10 and we have no way of knowing which square root the question requires!

5.

What is the square of 9?

3

6

9

81

Did you spot that we asked for the 'square' and NOT the 'square root'?

6.

The √ sign is referred to as what?

Square

Squared

Square root

Square rooted

7.

Which of these figures does not have a whole number as a square root?

25

35

49

64

8.

You are given the two numbers '9 squared' and '81'. How do they relate to each other?

81 is the larger number

9 squared is the larger number

They are both the same

They are in no way related

9 x 9 = 81

9.

What is the square root of 16?

2 or -2

4 or -4

6 or -6

8 or -8

Both 4 x 4 and -4 x -4 = 16

10.

What is the quickest way to find the square root of 8?

Divide 8 by 2

Multiply 8 x 2

Take 2 from 8

Use a calculator

Some square roots are not whole numbers and can be very difficult to work out. The square root of 8 is approximately 2.828427. We used a calculator to find out!