Question

Convert the fraction $\frac{442}{20}$ into decimals by making the denominator a multiple of $10$.

Answer 1

$\Rightarrow \frac{422}{20}=\frac{422\times 5}{20\times 5}$ ( Multiply the numerator and denominator by $5$ to make the denominator a multiple of $10$)

$\Rightarrow \frac{422\times 5}{20\times 5}=\frac{2110}{100}$

$\Rightarrow \frac{2110}{100}=21.10$ ( Since , there are two zero in denominator so the decimal point will be placed after two digit in the numerator moving from right to left )

Thus , the decimal representation of $\frac{422}{20}$ is $21.10$ .