Question

What is $4\times \frac{1}{10}+8\times \frac{1}{100}+6\times \frac{1}{1000}$?

Answer 1

We need to find $4\times \frac{1}{10}+8\times \frac{1}{100}+6\times \frac{1}{1000}$
We know that,
$\frac{1}{10}=0.1$
$\frac{1}{100}=0.01$
$\frac{1}{1000}=0.001$

So,
$4\times \frac{1}{10}=4\times 0.1=0.4$
$8\times \frac{1}{100}=8\times 0.01=0.08$
$6\times \frac{1}{1000}=6\times 0.001=0.006$

So,
$\begin{array}{cc}4\times \frac{1}{10}+8\times \frac{1}{100}+6\times \frac{1}{1000}& =0.4+0.08+0.006\\ & =0.400+0.080+0.006\\ & =0.486\end{array}$