 # Squaring Decimals

In this worksheet, students square simple decimal numbers. Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Understand Integer Powers/Real Roots

Difficulty level:   ### QUESTION 1 of 10

When we square a number which is less than 1, the answer is smaller than the original number.

Example

Work out (0.3)2

We must calculate 0.3 x 0.3

We know that 3 x 3 = 9

But now we must divide each of the 3s by 10

and therefore we must divide the 9 by 100.

9 ÷ 100 = 0.09

So  0.32 = 0.09

Similarly  0.72 = 0.49 and 0.032 = 0.0009

Work out:

0.12

Work out:

0.22

Work out:

0.42

Work out:

0.62

Work out:

0.92

Work out:

0.012

Work out:

0.022

Work out:

0.052

Work out:

0.072

Work out:

0.082

• Question 1

Work out:

0.12

0.01
• Question 2

Work out:

0.22

0.04
• Question 3

Work out:

0.42

0.16
• Question 4

Work out:

0.62

0.36
• Question 5

Work out:

0.92

0.81
• Question 6

Work out:

0.012

0.0001
• Question 7

Work out:

0.022

0.0004
• Question 8

Work out:

0.052

0.0025
• Question 9

Work out:

0.072

0.0049
• Question 10

Work out:

0.082

0.0064
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