Question

Estimate the sum to nearest hundred :

$830+898$

Answer 1

Rounding off the given numbers to nearest ten,

$$\begin{gathered} 830\underset{Roundedofftonearesthundred}{\to }800 \\ 898\underset{Roundedofftonearesthundred}{\to }900 \end{gathered}$$

Now, estimated sum is

$$\begin{gathered} =800+900 \\ =1700 \end{gathered}$$

Hence, the estimated sum to nearest hundred is $1700$.