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 4 apples cost $2, the unit rate is $0.50 per apple.

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How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total cost by the total quantity. For example, if 15 kg of tomatoes cost $32.25, the unit rate is $32.25 ÷ 15 kg = $2.15 per kg.

Front

What is the best buy?

Back

The best buy is the option that offers the lowest unit rate for the same quantity of a product.

Front

If 6 pencils cost $1.26, what is the unit rate per pencil?

Back

The unit rate per pencil is $1.26 ÷ 6 = $0.21 per pencil.

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How do you compare two unit rates?

Back

To compare two unit rates, calculate the unit rate for each option and then compare the values. The lower unit rate represents the better deal.

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

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

Front

What is a better buy: 5 lb of sugar for $25 or 8 lb?

Back

To determine the better buy, calculate the unit rate for both options and compare.