Rate / Unit Rate

Front

What is a rate?

Back

A rate is a ratio that compares two different quantities, often with different units, such as speed (miles per hour) or cost (dollars per item).

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is 1. It tells you how much of one quantity corresponds to one unit of another quantity.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the first quantity by the second quantity. For example, if you have 36 cookies for $4, the unit rate is 36 cookies ÷ 4 dollars = 9 cookies per dollar.

Front

If you buy 36 cookies for $4, what is the unit rate in cookies per dollar?

Back

9 cookies per dollar.

Front

If you spend $279 for 9 concert tickets, what is the cost per ticket?

Back

$31 per ticket.

Front

How do you find the cost per item when given total cost and number of items?

Back

Divide the total cost by the number of items. For example, if the total cost is $279 for 9 tickets, then $279 ÷ 9 = $31 per ticket.

Front

What is the unit rate of customers per hour if a store sees 120 customers in 8 hours?

Back

15 customers per hour.

Front

If Kiontre reads 100 pages in 5 days, how many pages does he read in 1 day?

Back

20 pages per day.

Front

How do you find the number of items per unit of time?

Back

Divide the total number of items by the total time. For example, if there are 120 customers in 8 hours, then 120 ÷ 8 = 15 customers per hour.

Front

If Analissa puts 55 seeds into 11 pots, how many seeds does she put in 1 pot?

Back

5 seeds per pot.