Unit Rates & Proportion Flashcard Review

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is expressed as a quantity per one unit of another quantity.

Front

How do you calculate a unit price?

Back

To calculate the unit price, divide the total price by the number of units. For example, if 6 ounces cost $2.98, the unit price is $2.98 ÷ 6 = $0.50 per ounce.

Front

What is a proportion?

Back

Front

How do you set up a proportion to solve a problem?

Back

Front

What is the first step in solving a proportion?

Back

Front

Back

It will take him 2 hours.

Front

What is the ratio of males to females at James Madison University?

Back

The ratio of males to females is 4:6, which simplifies to 2:3.

Front

How do you find the number of males at James Madison University if there are 18,000 students?

Back

Use the ratio 2:3. If there are 5 parts total (2 males + 3 females), then each part represents 18,000 ÷ 5 = 3,600 students. Therefore, the number of males is 2 parts × 3,600 = 7,200.

Front

What is the scale of a mug in a picture if ½ in. = 3 cm?

Back

The scale means that every ½ inch on the picture represents 3 cm in actual size.

Front

If a coffee mug is 4 inches tall, what is its actual height in cm?

Back

The actual height is 24 cm.