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Subtracting an Estimated Value from an Actual Value

3.3.1 Subtracting an Estimated Value from an Actual Value

3.3.1 • Subtracting an Estimated Value from an Actual Value

Warm Up

Use the following information to answer questions 1 - 4

Mentally calculate how close the estimate is to the actual value using the difference:

actual value − estimated value.

1.

Actual value: 24.8 grams. Estimated value: 19.6 grams

Compare your answer:

5.2 grams

2.

Actual value: $112.11. Estimated value: $109.30

Compare your answer:

$2.81

3.

Actual value: 41.5 centimeters. Estimated value: 45.90 centimeters

Compare your answer:

−4.4−4.4 centimeters

4.

Actual value: −1.34−1.34 degrees Celsius. Estimated value: −2.45−2.45 degrees Celsius

Compare your answer:

1.11 degrees Celsius