Question

Evaluate:

$6.3\times 8.1$

Answer 1

Given: $6.3\times 8.1$

Ignoring the decimal points in the multiplicands, we get $63$ and $81$

Multiplying $63$ by $81$, we get $5103$

This can also be expressed as:

$$\begin{gathered} 63 \\ \times 81 \\ \_\_\_\_\_\_ \\ 63 \\ +5040 \\ \_\_\_\_\_\_\_ \\ 5103 \\ \_\_\_\_\_\_\_ \end{gathered}$$

In the given multiplicands, there are two decimal places in all. So, put decimal point after two places from right in the product thus obtained and get the required product as $51.03$

Thus, $6.3\times 8.1=51.03$