Question

Find the sum of the following by using the suitable rearrangement.

$857+1108+763$

Answer 1

Step $1:$ Firstly see, whose numbers have unit place digit makes sum$10$.

In this case $7+3=10$

So we add, $857+763=1620$

Step $2:$ $(857+763)+1108$

$$\begin{gathered} =1620+1108 \\ =2728 \end{gathered}$$

Hence, the answer is $2728$