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Cubing Decimals

In this worksheet, students cube simple decimal numbers.

'Cubing Decimals' worksheet

Key stage:  KS 2

Curriculum topic:   Maths and Numerical Reasoning

Curriculum subtopic:   Decimals

Difficulty level:  

Worksheet Overview

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

 

Example

Work out (0.4)3

 

Answer

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

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