Introduction of Unit Rates

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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. It is often used to describe how much of one item is present for every one unit of another item.

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How do you calculate a unit rate?

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To calculate a unit rate, divide the total quantity of one item by the total quantity of the other item. For example, if you have 40 dollars for 5 pounds of concrete, the unit rate is 40 ÷ 5 = 8 dollars per pound.

Front

What is the unit rate of $40 for 5 pounds of concrete?

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$8 per pound.

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If Elijah earns $160 for 8 hours of work, what is his unit rate in dollars per hour?

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$20 per hour.

Front

What must be true about a unit rate?

Back

It is always 'per' one thing.

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A realtor visits 12 houses in 3 hours. What is the unit rate in houses per hour?

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4 houses per hour.

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If it costs $5 to buy 2 pounds of fish tank gravel, what is the unit rate in dollars per pound?

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$2.50 per pound.

Front

What is the formula for finding a unit rate?

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Unit Rate = Total Quantity of Item A / Total Quantity of Item B.

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Why are unit rates useful?

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Unit rates help compare different quantities and make informed decisions based on cost, time, or other factors.

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What is an example of a unit rate in everyday life?

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An example of a unit rate is the price of gas per gallon, such as $3.50 per gallon.