Calculate and Analyze Percent Error in Measurements

A student measures the length of a pencil as 15 cm, but the actual length is 14 cm. What is the percent error in the measurement?

• 12.25%

• 5.00%

• 7.14%

• 10.50%

A factory produces 200 toys, but 5 of them are found to be defective. What is the percent error in the production?

• 2.5%

• 4%

• 1%

• 3%

A recipe calls for 2 cups of sugar, but a baker accidentally uses 2.5 cups. What is the percent error in the amount of sugar used?

• 30%

• 25%

• 20%

• 15%

A car's fuel efficiency is rated at 30 miles per gallon, but it only achieves 28 miles per gallon in a test. What is the percent error in the fuel efficiency?

• 6.67%

• 5%

• 8%

• 10%

A student scores 85 out of 100 on a test, but the teacher later finds that the score was actually 90 out of 100. What is the percent error in the student's score?

• 7%

• 5.56%

• 10%

• 2.5%

A scientist measures the temperature of a solution as 75°C, but the actual temperature is 70°C. What is the percent error in the temperature measurement?

• 10.00%

• 2.50%

• 7.14%

• 5.00%

A store sells a shirt for $40, but the actual cost to produce it is $35. What is the percent error in the pricing of the shirt?

• 14.29%

• 5%

• 20%

• 10%

A gardener estimates that a plant will grow to 50 cm, but it only grows to 45 cm. What is the percent error in the growth estimate?

• 15%

• 10%

• 20%

• 5%

A student calculates the area of a rectangle as 60 square meters, but the actual area is 55 square meters. What is the percent error in the area calculation?

• 5%

• 15%

• 9.09%

• 12.5%

A teacher grades a project out of 50 points, but the student actually earned 45 points. What is the percent error in the student's project score?

• 15%

• 5%

• 20%

• 10%