Ratios, Rates & Proportions Test Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units, such as miles per hour or price per item.

Front

How do you find the unit rate?

Back

To find the unit rate, divide the quantity by the number of units. For example, if you travel 150 miles on 5 gallons, the unit rate is 150 miles ÷ 5 gallons = 30 miles per gallon.

Front

What does it mean to simplify a ratio?

Back

Simplifying a ratio means reducing it to its simplest form by dividing both terms by their greatest common factor.

Front

If Sara can bake 60 cookies in 10 minutes, how long will it take her to bake 15 cookies?

Back

It will take her 2.5 minutes to bake 15 cookies.

Front

How do you scale a ratio?

Back

To scale a ratio, you can multiply or divide both terms by the same number to maintain the same relationship.

Front

What is the difference between a ratio and a rate?

Back

A ratio compares two similar units, while a rate compares two different units.

Front

If 190 people fit in 3 buses, how many people fit in one bus?

Back

About 63 people fit in one bus.

Front

How many buses are needed for 570 people if 190 people fit in 3 buses?

Back

You would need 9 buses to carry 570 people.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.