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Cubing Decimals

In this worksheet, students cube simple decimal numbers.

'Cubing Decimals' worksheet

Key stage:  KS 3

Curriculum topic:  Number

Curriculum subtopic:  Understand Integer Powers/Real Roots

Difficulty level:  

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Worksheet Overview

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

 

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

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

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

Work out:

 

0.23

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

Work out:

 

0.33

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

Work out:

 

0.63

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

Work out:

 

0.53

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

Work out:

 

0.013

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

Work out:

 

0.023

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

Work out:

 

0.053

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

Work out:

 

0.073

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

Work out:

 

0.083

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

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