Question

Obtain an estimate for the following computation by rounding the numbers so that the resulting arithmetic can easily be performed by hand or in your head. Then, use a calculator to

perform the computation How reasonable is your estimate when compared to the actual answer?
2815-15.458
An estimate of the difference is (Type a whole number

Answer 1

Explanation:

2915 can stay as it is; 15.458 should be rounded down to 15. Then we have

2915-15, or 2900 (which is a very reasonable estimate).