# Cubing Decimals

In this worksheet, students cube simple decimal numbers.

Key stage:  KS 2

Curriculum topic:   Maths and Numerical Reasoning

Curriculum subtopic:   Decimals

Difficulty level:

### QUESTION 1 of 10

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

Example

Work out (0.4)3

We must calculate 0.4 x 0.4 x 0.4

We know that 4 x 4 x 4 = 64

But now we must divide each of the 4s by 10

and therefore we must divide the 64 by 1000.

64 ÷ 1000 = 0.064

So,  0.43 = 0.064

Similarly,  0.23 = 0.008 and 0.043 = 0.000064

Work out:

0.13

Work out:

0.23

Work out:

0.33

Work out:

0.63

Work out:

0.53

Work out:

0.013

Work out:

0.023

Work out:

0.053

Work out:

0.073

Work out:

0.083

• Question 1

Work out:

0.13

0.001
EDDIE SAYS
0.1 x 0.1 x 0.1 = 0.001
• Question 2

Work out:

0.23

0.008
EDDIE SAYS
0.2 x 0.2 x 0.2 = 0.008
• Question 3

Work out:

0.33

0.027
EDDIE SAYS
0.3 x 0.3 x 0.3 = 0.27
• Question 4

Work out:

0.63

0.216
EDDIE SAYS
0.6 x 0.6 x 0.6 = 0.216
• Question 5

Work out:

0.53

0.125
EDDIE SAYS
0.5 x 0.5 x 0.5 = 0.125
• Question 6

Work out:

0.013

0.000001
EDDIE SAYS
0.01 x 0.01 x 0.01 = 0.000001
• Question 7

Work out:

0.023

0.000008
EDDIE SAYS
0.02 x 0.02 x 0.02 = 0.000008
• Question 8

Work out:

0.053

0.000125
EDDIE SAYS
0.05 x 0.05 x 0.05 = 0.000125
• Question 9

Work out:

0.073

0.000343
EDDIE SAYS
0.07 x 0.07 x 0.07 = 0.000343
• Question 10

Work out:

0.083

0.000512
EDDIE SAYS
0.08 x 0.08 x 0.08 = 0.000512
---- OR ----

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