Percent Error Practice

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the difference between the estimated value and the actual value.

Tags

CCSS.6.RP.A.3C

Front

How do you calculate percent error?

Back

Percent error = |(Estimated Value - Actual Value)| / Actual Value × 100%.

Tags

CCSS.6.RP.A.3C

Front

Rogelio ate 2/5 of a pizza. What percent of a pizza did he eat?

Back

40%

Front

Sam thinks the cost of the book is $50, but actually it's $56. What is Sam's percent of error?

Back

10.7%

Tags

CCSS.6.RP.A.3C

Front

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.

Back

23%

Front

Jessie estimates the weight of her cat to be 8 pounds. The actual weight of the cat was 10 pounds. Find the percent error.

Back

20%

Tags

CCSS.6.RP.A.3C

Front

Nick estimated that 60 people would come to eat, but only 45 attended. Whats the % of error?

Back

33%

Tags

CCSS.6.RP.A.3C

Front

What is the formula for calculating the estimated value?

Back

Estimated Value = Actual Value ± (Percent Error × Actual Value).

Tags

CCSS.6.RP.A.3C

Front

If the actual value is 100 and the percent error is 10%, what is the estimated value?

Back

Estimated Value = 100 ± (10% × 100) = 90 or 110.

Tags

CCSS.6.RP.A.3C

Front

What does a percent error of 0% indicate?

Back

A percent error of 0% indicates that the estimated value is exactly equal to the actual value.

Tags

CCSS.6.RP.A.3C