Unit Rates

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as a quantity of one. For example, if you buy 4 apples for $2, the unit rate is $0.50 per apple.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the first quantity by the second quantity. For example, if you can type 408 words in 4 minutes, the unit rate is 408 ÷ 4 = 102 words per minute.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If Rose spent $2.00 for 20 pieces of gum, what is the unit rate per piece of gum?

Back

The unit rate is $2.00 ÷ 20 = $0.10 per piece of gum.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If Joe spent $1.50 for 10 pieces of gum, what is the unit rate per piece of gum?

Back

The unit rate is $1.50 ÷ 10 = $0.15 per piece of gum.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

Who got the better deal on gum, Rose or Joe?

Back

Rose got the better deal because her unit rate is $0.10 per piece of gum, while Joe's is $0.15.

Tags

CCSS.6.RP.A.3B

Front

What is the formula to find miles per gallon (mpg)?

Back

The formula to find miles per gallon is: mpg = total miles driven ÷ total gallons of gas used.

Tags

CCSS.6.RP.A.3B

Front

If my father drove 231 miles with 7 gallons of gas, what is his mileage?

Back

His mileage is 231 ÷ 7 = 33 miles per gallon.

Tags

CCSS.3.OA.D.8

Front

How do you determine the slowest reading rate from a set of options?

Back

To determine the slowest reading rate, calculate the number of pages read per minute for each option and compare them.

Tags

CCSS.RI.4.10

CCSS.RI.5.10

CCSS.RI.6.4

CCSS.RI.7.4

CCSS.RI.8.4

Front

If a teacher grades 25 homework assignments in 20 minutes, what is the grading rate per assignment?

Back

The grading rate is 25 ÷ 20 = 1.25 assignments per minute.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If the teacher grades 36 homework assignments in 30 minutes, what is the grading rate per assignment?

Back

The grading rate is 36 ÷ 30 = 1.2 assignments per minute.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2