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 one unit. 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 the unit rate?

Back

To calculate the unit rate, divide the total quantity by the total cost. For example, if 6 pencils cost $1.26, the unit rate is $1.26 ÷ 6 = $0.21 per pencil.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

Which is a better buy: 7 pencils for $1.40 or 6 pencils for $1.26?

Back

7 pencils for $1.40 is a better buy because the unit rate is lower.

Tags

CCSS.6.RP.A.3B

Front

What is the unit rate of chairs to tables if there are 120 chairs and 30 tables?

Back

The unit rate of chairs to tables is 4:1.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you determine the better buy between two products?

Back

To determine the better buy, compare the unit rates of both products. The product with the lower unit rate is the better buy.

Tags

CCSS.6.RP.A.3B

Front

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

Back

The cost per pound is $25 ÷ 5 = $5 per pound.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the unit rate of 15 kg of tomatoes for $32.25?

Back

The unit rate is $32.25 ÷ 15 = $2.15 per kg.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

Which is a better buy: 15 kg for $32.25 or 4 kg for $8.72?

Back

15 kg for $32.25 is a better buy because the unit rate is lower.

Tags

CCSS.6.RP.A.3B

Front

If 27 ounces of nacho chips cost $3.51, what is the cost per ounce?

Back

The cost per ounce is $3.51 ÷ 27 = $0.13 per ounce.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the unit rate of nacho chips if 10 ounces cost $1.30?

Back

The unit rate is $1.30 ÷ 10 = $0.13 per ounce.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2