Question

Find the product by suitable rearrangement

$125\times 40\times 8\times 25$

Answer 1

Step $1:$ Firstly multiply $125\times 8$

$$\begin{gathered} \Rightarrow (125\times 8)\times 40\times 25 \\ \Rightarrow 1000\times 40\times 25 \end{gathered}$$

Step $2:$ Then multiply $40\times 25$

$$\begin{gathered} \Rightarrow 1000\times 40\times 25 \\ \Rightarrow 1000\times 1000 \end{gathered}$$

Step $3:$Then multiply $1000\times 1000$

$$\begin{gathered} \Rightarrow 1000\times 1000 \\ \Rightarrow 1000000 \end{gathered}$$

Hence, the answer is $1000000$.