Proportions and Unit rates

Front

What is a proportion?

Back

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

Front

How do you find a unit rate?

Back

To find a unit rate, divide the quantity by the number of units. For example, if a car travels 300 miles in 5 hours, the unit rate is 300 miles ÷ 5 hours = 60 miles per hour.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division.

Front

If 4 pairs of socks cost $9, how much does 1 pair cost?

Back

$2.25 per pair.

Front

If a car travels 440 miles in 8 hours, what is the speed in miles per hour?

Back

55 miles per hour.

Front

What is the formula for finding the cost per item?

Back

Cost per item = Total cost ÷ Number of items.

Front

If 5 candy bars cost $3.00, how much does 1 candy bar cost?

Back

$0.60 per candy bar.

Front

What is the relationship between unit rates and proportions?

Back

Unit rates can be used to create proportions to compare different ratios.

Front

If you travel 150 miles on 5 gallons of gas, how many miles do you travel per gallon?

Back

30 miles per gallon.

Front

What is a unit price?

Back

A unit price is the cost for one unit of a product, often used to compare prices.