Question

Estimate the following using general rule:
730 + 998

Answer 1

We can round off each term to its nearest hundred or thousand to make our calculation easy. Then we can get the estimated sum as:

$\begin{array}{cc}\text{730 round off to}& =700\\ \text{998 round off to}& =1,000\\ \text{Estimated sum}& =1,700\end{array}$