Evaluate :

(0.2)³

We have:

(0.2)³ = 0.2 × 0.2 × 0.2

First we multiply 2 × 2 × 2

$\begin{matrix} & 2 \ \times & 2 \ \hline & \bold{4} \end{matrix}$

∴ 2 × 2 =4

$\begin{matrix} & 4 \ \times & 2 \ \hline & \bold{8} \end{matrix}$

∴ 2 × 2 × 2 = 8

Sum of decimal places in given decimals = (1 + 1 + 1) = 3

So, the product contains 3 places of decimal

∴ (0.2)³ = 0.008