Unit Rates

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 'per' something, such as miles per hour or cost per item.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity by the number of units. For example, if you have 150 grams of fertilizer for 6 acres, the unit rate is 150 grams ÷ 6 acres = 25 grams per acre.

Front

If 150 grams of fertilizer is needed for 6 acres, how much is needed for 13 acres?

Back

325 grams.

Front

What is the unit rate if Will spent $3.75 for 3 pounds of granola?

Back

$1.25 per pound.

Front

How do you determine if one rate is faster than another?

Back

Compare the unit rates. The one with the higher unit rate is faster.

Front

If a teacher grades 25 homework assignments in 20 minutes, what is the rate per assignment?

Back

1.25 assignments per minute.

Front

If Christina biked 36 miles in 6 hours, what is her speed in miles per hour?

Back

6 mph.

Front

How do you find the price per ticket if 4 concert tickets cost $148?

Back

Divide the total cost by the number of tickets: $148 ÷ 4 = $37 per ticket.

Front

What is the formula for calculating unit price?

Back

Unit Price = Total Price ÷ Quantity.

Front

If a car travels 240 miles in 4 hours, what is the unit rate in miles per hour?

Back

60 miles per hour.