Percent Error
Percent Increase
Percent Decrease
Find the Percent
2 Step
100

Google maps tells you that it should take 81 minutes to drive to your grandparents house. It actually takes 84 minutes. What is the percent error?

3.70%

100

A shirt costs $15 plus 10% tax.

What is the total cost of the shirt?

$16.5

100

20% less than 42

33.6

100

70% of 18

12.6

100

$68 

+ 10% tax

-10% coupon

$67.32

200

A recipe for acorn squash calls for 59 minutes in the oven. I take the squash out 5 minutes early. 

What was the percent error?

8.47%

200

34 increased by 81%

61.54

200

2% less than 77

75.46

200

4% of 44

1.76

200

$70

-12% discount

+ 7% tax

$65.91

300

The temperature in Death Valley is 95 degrees. The weather station is predicting 101.

What is the percent error?

6.32%

300

66% more than 20

33.2

300

96 decreased by 11%

85.44

300

36% of 70

25.2

300

$94

- 13% discount

+ 6% tax

$86.69

400

I expected to pay 19 dollars for a pair of earings. I actually spent 22. 

What is the percent error?

15.79%

400

83 increased by 46%

121.18

400

63% less than 21

7.77

400

46% of 56

25.76

400

$73

-10% discount

+10% tax

$72.27

500

Google maps tells you that it will take 70 minutes to drive to Mt. Bachelor from Redmond.

It actually takes 66 minutes.

What was the percent error?

5.71%

500

3% more than 63

64.89

500

32 decreased by 39%

19.52

500

16% of 35

5.6

500

$93

-8% discount

+ 20% tip

$102.67

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