Percent Error Practice Worksheet

This worksheet provides practice problems on calculating percent error for various measurements and estimations, suitable for Grade 11 math students.

Grade 11 Math Percents, Ratios, and RatesPercent Error

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Fill in the Blanks2 Short AnswerMultiple ChoiceTrue / False

Standards

CCSS.MATH.CONTENT.HSA.CED.A.1CCSS.MATH.CONTENT.HSN.Q.A.3

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Percent Error Practice

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Read each problem carefully and calculate the percent error. Round your answers to two decimal places where appropriate.

1. Percent error is calculated using the formula: (|Observed Value - Actual Value| / ) * 100%.

2. A low percent error indicates that the observed value is to the actual value.

3. A student measures the length of a desk to be 152 cm. The actual length of the desk is 150 cm. Calculate the percent error.

4. A scientist predicts that a reaction will produce 25 grams of product. After the experiment, 22 grams of product are obtained. What is the percent error?

12%

13.64%

10.71%

5. A manufacturer states that a product weighs 500 grams. A quality control check reveals that a sample weighs 508 grams. What is the percent error in the measurement?

6. An economist estimates the annual inflation rate to be 3.5%. The actual inflation rate for the year was 3.2%. Calculate the percent error in the economist's estimate.

7. A negative percent error indicates that the observed value is greater than the actual value.

True

False