Ratios and Unit Rates

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 unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'x per 1 unit'.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total quantity by the number of units. For example, if 15 pizzas cost $97.50, the unit rate is $97.50 ÷ 15.

Front

If Jayce and Bennie bought 15 pizzas for $97.50, what is the unit rate per pizza?

Back

$6.50 per pizza.

Front

If Sunari reads 12 pages in 9 minutes, how many pages does she read in 1 minute?

Back

1.3333 pages per minute.

Front

How do you find the unit rate of calories per serving?

Back

Divide the total calories by the number of servings. For example, 208 calories in 4 servings gives 208 ÷ 4 = 52 calories per serving.

Front

If Cody finds 208 calories in 4 servings, what is the unit rate of calories per serving?

Back

52 calories per serving.

Front

How do you calculate the price per gallon of gasoline?

Back

Divide the total cost by the number of gallons. For example, $16.80 for 4 gallons gives $16.80 ÷ 4 = $4.20 per gallon.

Front

If Kedarius bought 4 gallons of gasoline for $16.80, what is the price per gallon?

Back

$4.20 per gallon.

Front

What is the unit price of an item?

Back

The unit price is the cost of one unit of an item, calculated by dividing the total price by the number of units.