Question

Estimate the following by rounding off to nearest hundreds :

$874+478$

Answer 1

For rounding off to the 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,

$$\begin{gathered} 874\to 900 \\ 478\to 500 \\ 874+478\to 900+500 \\ =1400 \end{gathered}$$

Hence, $874+478\to 1400$.