Percent Increase Decrease Error

A stock increases in value by 5% from $100 to what value?

• $105

• $110

• $95

• $100.50

Find the percent increase or decrease:

40 peaches to 28 peaches

Find the percent increase or decrease:

100 MB to 145 MB

Find the percent increase or decrease:

6 liters to 8 liters

James estimated that there were 50 kids at the basketball court. There were actually 60. Find James's percent error.

Thundering Ted on the local news predicted that we would get 2 inches of snow. It snowed 14 inches. Find Thundering Ted's percent error.

Lisa Lightening predicted today's high temperature would be 60 degrees. It reached 80 degrees today. Find Lisa lightening's percent error.

Janisha guessed that her dog Fluffy weighed 40 pounds. Fluffy went to the vet and weighed in at 47 pounds. What was Janisha's percent error? (round to the nearest tenth of a percent)

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%

• 18%

Tawanna estimated that there were 1200 people at the basketball game. 900 people were actually there. What other estimate would have the same percent error?