Percentage Change Practice One

Front

What is percentage change?

Back

Percentage change is a way to express a change in a quantity as a percentage of the original amount. It is calculated using the formula: ((New Value - Old Value) / Old Value) * 100.

Tags

CCSS.6.RP.A.3C

Front

How do you calculate the increase in quantity?

Back

To calculate the increase in quantity, subtract the old value from the new value. For example, if the old value is 400 and the new value is 450, the increase is 450 - 400 = 50.

Tags

CCSS.7.NS.A.1A

Front

What is the formula for calculating percentage increase?

Back

The formula for calculating percentage increase is: ((New Value - Old Value) / Old Value) * 100.

Tags

CCSS.6.RP.A.3C

Front

How do you calculate the decrease in quantity?

Back

To calculate the decrease in quantity, subtract the new value from the old value. For example, if the old value is $40 and the new value is $30, the decrease is 40 - 30 = 10.

Tags

CCSS.6.NS.B.3

Front

What is the formula for calculating percentage decrease?

Back

The formula for calculating percentage decrease is: ((Old Value - New Value) / Old Value) * 100.

Tags

CCSS.6.RP.A.3C

Front

If a quantity increases from 400 to 450, what is the absolute change?

Back

The absolute change is 50.

Front

If a quantity decreases from $40 to $30, what is the percentage decrease?

Back

The percentage decrease is 25%.

Tags

CCSS.6.RP.A.3C

Front

If a car's fuel efficiency improves from 15 km/l to 18 km/l, what is the percentage improvement?

Back

The percentage improvement is 25%.

Tags

CCSS.6.RP.A.3C

Front

What does a negative percentage change indicate?

Back

A negative percentage change indicates a decrease in quantity.

Tags

CCSS.6.RP.A.3C

Front

If Mr. Tam finishes 3000m in 20 min last year and 18 min this year, what is the change in time?

Back

The change in time is -2 min.

Tags

CCSS.7.EE.B.3