Measurement Percent Error

Find the percent error. Round to the nearest tenth of a percent.

Actual speed: 38 mph

Estimated speed: 35 mph

Bob estimates that there will be 230 people who attend the concert.  There was an actual total of 300 people who attended.  Find the percent error.  

You estimate that you sent 135 texts last week but when you get the bill it was actually 108. 

Griffin was buying a birthday card, he thinks the price is $4.50, but the actual price is $4. What is his percent of error?

Litzy estimates that a piece of wood measures 5.5 cm. If it actually measures 5.62 cm, what is the percent error of Litzy's estimate?

An experimental measurement was taken of 10.4 mL and the actual measurement was 9.7 mL. What is the percent error? Round to the nearest tenth of a percent.

Shaun estimated that the attendance of a college hockey game was 3,000. The actual attendance was 2,712. What is the percent error of Shaun's estimate? Round to the nearest whole percent.

A student has a container with a volume of 2.5 liters. She estimates the volume to be 2.4 liters. By what percent is the student's estimate off?

A zookeeper predicted that the weight of a newborn lion would be 2.8 pounds. When the zoo's lion gave birth, the newborn weighed 3.5 pounds. What is the zookeeper's percent error?

Jeyson predicts that 227 students would attend the school dance. The actual number was 250. What is the percent error of Jeyson's prediction?