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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
Want a bit more help with this before you begin? Why not watch this short video?
