Question

Find the product of $25\times 196\times 4$ by suitable rearrangement.

Answer 1

$\Rightarrow 25\times 196\times 4$

After rearranging, it can be written as

$$\begin{gathered} \Rightarrow 196\times 100 \\ \Rightarrow 19600 \end{gathered}$$ (multiplying any number with 100 is easy, so we multiplied 25 with 4 in the first step. And then, 196 will be multiplied by 100)

Thus, $19600$ will be the product.