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 a car travels 300 miles in 5 hours, the unit rate is 60 miles per hour.

Front

How do you calculate the unit cost of an item?

Back

To calculate the unit cost, divide the total cost by the number of items. For example, if 15 pizzas cost $97.50, the unit cost per pizza is $97.50 ÷ 15 = $6.50.

Front

If a car travels 240 miles in 4 hours, what is the unit rate in miles per hour?

Back

The unit rate is 60 miles per hour, calculated by dividing 240 miles by 4 hours.

Front

Which is the better buy: a 12-pack of soda for $3.50 or a 6-pack for $1.80?

Back

The 12-pack is the better buy because it costs less per can. The unit cost for the 12-pack is $3.50 ÷ 12 = $0.29 per can, while the 6-pack costs $1.80 ÷ 6 = $0.30 per can.

Front

How do you find the total accumulation of snow if it falls at a rate of 3 inches per hour for 2.5 hours?

Back

Multiply the rate of snowfall by the time: 3 inches/hour × 2.5 hours = 7.5 inches.

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If Harry mowed 8 lawns and earned $96, how much did he earn for each lawn?

Back

He earned $12 for each lawn, calculated by dividing $96 by 8 lawns.

Front

What is the formula for calculating unit rates?

Back

The formula for calculating unit rates is: Unit Rate = Total Quantity ÷ Number of Units.

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Why is understanding unit rates important in real life?

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Understanding unit rates helps consumers make informed decisions about purchases, compare prices, and evaluate the best options.

Front

What is an example of a unit rate in cooking?

Back

An example of a unit rate in cooking is measuring ingredients, such as 2 cups of flour for 4 servings, which means the unit rate is 0.5 cups of flour per serving.

Front

How can you determine the better deal when comparing two products?

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To determine the better deal, calculate the unit price for each product and compare them. The lower unit price indicates the better deal.