Rates and 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 you travel 60 miles in 2 hours, the unit rate is 30 miles per hour.

Front

Define equivalent ratio.

Back

Equivalent ratios are two or more ratios that express the same relationship between numbers. For example, the ratios 1:2 and 2:4 are equivalent.

Front

How do you find the unit price of an item?

Back

To find the unit price, divide the total price by the number of units. For example, if a 6-pack of soda costs $2.40, the unit price is $2.40 ÷ 6 = $0.40 per can.

Front

If 2 pairs of shoes cost $30, what is the cost of 1 pair?

Back

The cost of 1 pair is $30 ÷ 2 = $15.

Front

What is the relationship between ratios and rates?

Back

A ratio is a comparison of two quantities, while a rate is a specific type of ratio that compares quantities with different units, such as miles per hour.

Front

If an oil spill spreads 25 square meters every 10 minutes, how much does it spread in 1 hour?

Back

In 1 hour (60 minutes), it spreads 25 square meters every 10 minutes, so it spreads 25 x 6 = 150 square meters.

Front

What is the formula to calculate a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

If you buy 5 pounds of apples for $10, what is the cost per pound?

Back

The cost per pound is $10 ÷ 5 = $2 per pound.

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

If a recipe requires 3 cups of flour for every 2 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 3:2.