Rates and Unit Rates

Front

What is an equivalent ratio?

Back

An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different. For example, 1:2 and 2:4 are equivalent ratios.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity by the number of units. For example, if you travel 150 miles in 3 hours, the unit rate is 150 miles ÷ 3 hours = 50 miles per hour.

Front

What is a unit rate?

Back

A unit rate is a rate that compares a quantity to one unit of another quantity. For example, 60 miles per hour is a unit rate because it describes how many miles are traveled in one hour.

Front

If 5 apples cost $3, what is the cost of 1 apple?

Back

$0.60

Front

What is the relationship between equivalent fractions and equivalent ratios?

Back

Equivalent fractions and equivalent ratios both represent the same relationship between numbers. For example, 1/2 and 2/4 are equivalent fractions, just as 1:2 and 2:4 are equivalent ratios.

Front

How do you find the area covered by an oil spill that spreads at a constant rate?

Back

Multiply the rate of spread by the time. For example, if an oil spill spreads 25 square meters every 10 minutes, after 1 hour (60 minutes), it will cover 150 square meters.

Front

What is the formula to find the unit rate from a given rate?

Back

Unit Rate = Total Quantity ÷ Total Units.

Front

If a car travels 300 miles in 5 hours, what is the unit rate in miles per hour?

Back

60 miles per hour.

Front

What does it mean if two ratios are equivalent?

Back

It means they represent the same relationship between quantities, even if the numbers are different.

Front

What is a rate?

Back

A rate is a ratio that compares two different kinds of quantities, such as distance to time.