Question

On the way to the Samuelsons’, Mr. Anderson filled his car with gas. He put in 9.7 gallons and paid $3.45 per gallon. Estimate the total charge. What was the actual charge for gas?

Answer 1

Estimate: $34.5

Actual: $33.465

Explanation:

9.7 is approximately 10

Estimate

10 × 3.45 = 34.5

Actual:

9.7 × 3.45 = 33.465

Answer 2

Estimate = $34.50

Actual charge $33.47

Explanation:

To estimate, we round the numbers

9.7 gallons rounds to 10 gallons

10 gallons * 3.45 per gallon =34.50

This is an overestimation

The actual charge

9.7* 3.45 =33.465

We round to the nearest cent

33.47