Percent Change & Error

Front

Mary currently weighs 150 pounds. Before her diet she weighed 180 pounds. What is the percent of change in her weight? Options: 17% Decrease, 17% Increase, 20% Increase, 20% Decrease

Back

17% Decrease

Front

A school's population increased from 1250 to 2000 students. What was the percent of increase?

Back

60%

Front

Last week, the price of American cheese was $5 per pound. This week, it costs $6 per pound. What is the percent change?

Back

Increase 20%

Front

An online auction started the bid on an item at $20. The item sold for $50. What was the percent increase to the nearest percent?

Back

150%

Front

Estimate: 135 texts; Actual: 108 texts. What is the percent error?

Back

25%

Front

Estimate: 200 people attend a concert. Actual: 240. What is the percent error?

Back

16.7%

Front

In 1999, the price of unleaded fuel was $1.09. In 2015, the price of unleaded fuel is $1.89. What is the percent change?

Back

73% increase

Front

Ricky's math score changed from 80 to 86. What was the percent change?

Back

7.5% increase

Front

An archaeologist estimated that a fossil was 520 years old. It was actually 500 years old. What was the percent error?

Back

4%

Front

Mr. Nacerino estimates that it will take him 48 minutes to run 8 miles. It actually takes him 60 minutes. What was his percent error?

Back

20%