Better Buy: Unit Rate

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 3 apples for $6, the unit rate is $2 per apple.

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 10 pieces of gum cost $1.50, the unit rate is $1.50 ÷ 10 = $0.15 per piece.

Front

Which is a better deal: 11.5 oz of Doritos for $4.39 or 9.75 oz of Cheetos for $3.24?

Back

Cheetos are the better deal because the unit rate is lower.

Front

What is the formula to find the better buy?

Back

The formula is: (Cost of item) ÷ (Quantity of item) = Unit Price. Compare unit prices to find the better buy.

Front

If Holly buys cloth for $16.52 for 6 yards, what is the cost per yard?

Back

The cost per yard is $16.52 ÷ 6 = $2.75 per yard.

Front

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

Back

The cost per piece is $1.50 ÷ 10 = $0.15 per piece.

Front

What is the better buy: 2-ounce bottle of soap for $1.80 or 8-ounce bottle for $7.28?

Back

The 2-ounce bottle is the better buy because it has a lower unit price.

Front

How do you compare two different deals?

Back

To compare two deals, calculate the unit price for each deal and compare them. The deal with the lower unit price is the better buy.

Front

What is the unit price of 27 ounces of nacho chips for $3.51?

Back

The unit price is $3.51 ÷ 27 = $0.13 per ounce.

Front

What is the unit price of 10 ounces of nacho chips for $1.30?

Back

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