Question

Estimate the following by rounding off to nearest hundreds :

$11677+13589$

Answer 1

For rounding off to nearest hundreds,we first check the digit at ten's place.If the digit at ten's place is less than $5$ then we replace its ten's and one's place by zero but if the digit at ten's place is $\ge 5$ then we add $1$ to hundred's place digit and then replace ten's place and one's place by zero.

Here,

$$\begin{gathered} 11677\to 11700 \\ 13589\to 13600 \\ 11677+13589\to 11700+13600 \\ =25,300 \end{gathered}$$

Hence, $11677+13589=25,300$.