Percent Change & Percent Error

Front

What is percent change?

Back

Percent change is a measure of how much a quantity has increased or decreased relative to its original value, expressed as a percentage.

Tags

CCSS.6.RP.A.3C

Front

How do you calculate percent increase?

Back

Percent increase = ((New Value - Original Value) / Original Value) x 100.

Tags

CCSS.6.RP.A.3C

Front

How do you calculate percent decrease?

Back

Percent decrease = ((Original Value - New Value) / Original Value) x 100.

Tags

CCSS.6.RP.A.3C

Front

What is the formula for percent error?

Back

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

Tags

CCSS.6.RP.A.3C

Front

If a price increases from $50 to $75, what is the percent increase?

Back

Percent increase = ((75 - 50) / 50) x 100 = 50%.

Tags

CCSS.6.RP.A.3C

Front

If a price decreases from $80 to $60, what is the percent decrease?

Back

Percent decrease = ((80 - 60) / 80) x 100 = 25%.

Tags

CCSS.6.RP.A.3C

Front

What does a percent change of 0% indicate?

Back

A percent change of 0% indicates that there has been no change in value.

Tags

CCSS.6.RP.A.3C

Front

If a test time increases from 30 minutes to 45 minutes, what is the percent change?

Back

Percent change = ((45 - 30) / 30) x 100 = 50% increase.

Tags

CCSS.6.RP.A.3C

Front

What is the percent error if the estimated time is 50 minutes and the actual time is 40 minutes?

Back

Percent error = (|50 - 40| / 40) x 100 = 25%.

Tags

CCSS.6.RP.A.3C

Front

If an item is bought for $30 and sold for $60, what is the percent increase?

Back

Percent increase = ((60 - 30) / 30) x 100 = 100%.

Tags

CCSS.6.RP.A.3C