Best Buy: 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 5 apples cost $10, the unit rate is $2 per apple.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total quantity by the number of units. For example, if 8 oranges cost $4, the unit rate is $4 ÷ 8 = $0.50 per orange.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the importance of unit rates in shopping?

Back

Unit rates help consumers compare prices of different products to determine which is the better buy.

Tags

CCSS.6.RP.A.3B

Front

If 5 lb of sugar costs $25, what is the unit rate per pound?

Back

The unit rate is $25 ÷ 5 lb = $5 per pound.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If 8 lb of sugar costs $50, what is the unit rate per pound?

Back

The unit rate is $50 ÷ 8 lb = $6.25 per pound.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

Which is the better buy: 5 lb of sugar for $25 or 8 lb for $50?

Back

5 lb of sugar for $25 is the better buy because it has a lower unit rate of $5 per pound compared to $6.25 per pound.

Tags

CCSS.6.RP.A.3B

Front

How do you compare prices of different quantities?

Back

To compare prices, calculate the unit rate for each option and compare those rates.

Tags

CCSS.6.RP.A.3B

Front

What is the unit rate for $52.16 for 8 dozen oranges?

Back

The unit rate is $52.16 ÷ 8 dozen = $6.52 per dozen.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the unit rate for $33.77 for 5 dozen oranges?

Back

The unit rate is $33.77 ÷ 5 dozen = $6.75 per dozen.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

Which is the better deal for oranges: $52.16 for 8 dozen or $33.77 for 5 dozen?

Back

$52.16 for 8 dozen is the better deal because it has a lower unit rate of $6.52 per dozen.

Tags

CCSS.6.RP.A.3B