Percent Error, Percent of Change, Simple Interest

Find the percent of change from 10 inches to 14 inches.

• 4% Increase

• 29% Increase

• 40% Increase

• 3% Increase

Find the percent of change from $52 to $125. Round your answer to the nearest whole percent.

• 140% Increase

• 73% Increase

• 58% Increase

• 104% Increase

Find the percent of change if the original cost was $5 and the new cost is $1. 

• 4% Decrease

• 80% Decrease

• 400% Decrease

• 75% Decrease

The students measured length during a science experiment, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

• 15.79%

• 18.75%

• 2.25%

• 8.72%

The distance around a neighborhood is 6 miles. When Sam clocked it with an odometer, the distance was 5.52 miles.

What is the percent error of the clocking?

• 10%

• 6.5%

• 7%

• 8%

What is the simple interest on a principal amount of $200 at a rate of 3% per year for 4 years?

• $18

• $24

• $30

• $36

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

Actual speed: 38 mph

Estimated speed: 35 mph

• 8.1%

• 0.79%

• 7.9%

• 6.8%

Calculate the simple interest on a loan of $1,000 at an annual interest rate of 5% for 3 years.

• $150

• $50

• $250

• $300

Anna invested $2,500 at an annual rate of 5%.  How long will it take until Anna earns $1,125 in interest?

• 5 years

• 8 years

• 10 years

• 9 years

Zed went to the store and bought a bag of chips.  He estimated there would be 350 chips in the package, but realized there were only 210 chips in that package.  What was his percent error?

• 35%

• 67%

• 85%

• 92%