Unit Rates & Proportions

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 rate?

Back

To calculate a unit rate, divide the first quantity by the second quantity.

Front

What mathematical operation does unit rates involve?

Back

Division.

Front

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

Back

60 miles per hour.

Front

Izzy drinks 8 glasses of water a day. How many glasses of water will she drink in 2 weeks?

Back

112 glasses.

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

Cross-multiply and then solve for the unknown variable.

Front

Fill in the missing number into the ratio table: 5:11 = ? : 22

Back

10.

Front

If 3 apples cost $1.50, what is the cost of 1 apple?

Back

$0.50.

Front

Solve for r: 4r = 78

Back

r = 19.5.