4.1 Unit Rates

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as a quantity of one. For example, if a car travels 300 miles in 5 hours, the unit rate is 60 miles per hour.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity of one item by the quantity of another item. For example, if you earn $30 for 5 hours of work, the unit rate is $30 ÷ 5 hours = $6 per hour.

Front

If Justin can type 408 words in 4 minutes, how many words can he type per minute?

Back

102 words per minute.

Front

Alycia earned $20.40 in 3 hours. What is her unit rate in dollars per hour?

Back

$6.80 per hour.

Front

Find the unit rate of $97.50 for 15 pizzas.

Back

$6.50 per pizza.

Front

How do you find the better deal between two products?

Back

To find the better deal, calculate the unit price for each product and compare them. The product with the lower unit price is the better deal.

Front

Sargento cheese slices cost $2.48 for 10 slices. What is the unit price?

Back

$0.248 per slice.

Front

Velveeta Cheese slices cost $3.18 for 12 slices. What is the unit price?

Back

$0.265 per slice.

Front

If Jack jumps 40 times in 4 minutes, how many times does he jump per 1 minute?

Back

10 times per minute.

Front

What is the formula for calculating unit price?

Back

Unit Price = Total Price ÷ Number of Items.