When we square a number which is less than 1, the answer is smaller than the original number.
Example
Work out (0.3)2
Answer
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