Percent Error Practice Worksheet

Practice calculating percent error in various real-world scenarios for Grade 9 mathematics.

Grade 9 Math Percents, Ratios, and RatesPercent Error

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Includes

Fill in the BlanksMultiple ChoiceShort AnswerTrue / FalseCustom

Standards

CCSS.MATH.CONTENT.7.RP.A.3

Topics

percent errormathematicsgrade 9percentsratios

7 sections · Free to use · Printable

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Percent Error Practice Worksheet

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

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

2. A low percent error indicates that the measured value is close to the value.

1. A student measures the length of a table to be 152 cm. The actual length of the table is 150 cm. What is the percent error?

1.33%

2.00%

0.67%

1.25%

2. A scientist predicts that a reaction will produce 25 grams of product. After the experiment, 23 grams of product are obtained. What is the percent error?

8.00%

8.70%

0.08%

0.02%

1. A baker estimates that a cake will weigh 1.5 kg. The actual weight of the cake is 1.65 kg. Calculate the percent error.

2. A weather forecaster predicted a high temperature of 20°C. The actual high temperature was 22°C. What is the percent error in the forecast?

1. A percent error of 0% means the measured value is exactly the same as the actual value.

True

False

2. Percent error can be a negative value.

True

False

A technician uses a ruler to measure the length of a circuit board. The actual length is 10 cm. The technician measures it as 10.3 cm.

Calculate the percent error in the technician's measurement.