Best Buy: Unit Rates

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity.

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How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total cost by the total number of items. For example, if 8 apples cost $5.20, the unit rate is $5.20 ÷ 8 = $0.65 per apple.

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If 12 oranges cost $24, what is the unit rate?

Back

The unit rate is $24 ÷ 12 = $2 per orange.

Front

Which is a better buy: 10 pencils for $3.00 or 15 pencils for $4.50?

Back

Calculate the unit rates: 10 pencils for $3.00 = $0.30 per pencil; 15 pencils for $4.50 = $0.30 per pencil. They are the same price per pencil.

Front

What is the unit rate of 5 gallons of paint for $75?

Back

The unit rate is $75 ÷ 5 = $15 per gallon.

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If a 500ml bottle of soda costs $2.50 and a 1 liter bottle costs $4.00, which is a better buy?

Back

Calculate the unit rates: 500ml for $2.50 = $5 per liter; 1 liter for $4.00 = $4 per liter. The 1 liter bottle is a better buy.

Front

What is the best price for 3 pounds of apples at $4.50 or 5 pounds at $7.50?

Back

Calculate the unit rates: 3 pounds for $4.50 = $1.50 per pound; 5 pounds for $7.50 = $1.50 per pound. They are the same price per pound.

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If 4 dozen eggs cost $8.00, what is the cost per dozen?

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The cost per dozen is $8.00 ÷ 4 = $2.00 per dozen.

Front

What is the unit rate of 6 books for $18?

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The unit rate is $18 ÷ 6 = $3 per book.

Front

Which is a better deal: 2 liters of juice for $3.00 or 1 liter for $1.50?

Back

Calculate the unit rates: 2 liters for $3.00 = $1.50 per liter; 1 liter for $1.50 = $1.50 per liter. They are the same price per liter.