Grade 12 Math: Percent Error Worksheet
This worksheet focuses on understanding and calculating percent error in various real-world scenarios for Grade 12 students.
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Grade 12 Math: Percent Error
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Read each question carefully and show all your work. Calculate the percent error for each problem, rounding your answer to two decimal places where appropriate.
1. Percent error is a measure of the of a measured or experimental value compared to a true or accepted value.
2. The formula for percent error is: (|Observed Value - Accepted Value| / ) * 100%.
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 chemist performs an experiment and obtains a yield of 45 grams of product. The theoretical yield for this reaction is 50 grams. What is the percent error?
5%
10%
11.11%
9.09%
5. A manufacturer states that the average lifespan of their light bulbs is 1500 hours. A consumer group tests a sample of these bulbs and finds an average lifespan of 1425 hours. Calculate the percent error.
6. A negative percent error indicates that the observed value is greater than the accepted value.
True
False