Word problem

Question

Mallory is a pilot. Last week she flew the following round trips in miles: 2,020; 1,358; 952; 2,258; and 1,888. What is a good estimate of the miles Mallory flew last week?

Answer 1

Obviously, the exact sum can be obtained by adding the distances.

 

A quick estimate can be made by rounding the figures to the nearest thousand, and then adding the results. The result will be 2 + 1 + 1 + 2 + 2 = 8.

 

So, 8,000 miles will be the quick estimate. The actual distance was 8,476 miles. Normally, the value of 8,476 would be rounded down to 8,000.