Unit Rate & Ratios

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 the unit price?

Back

To calculate the unit price, divide the total price by the number of units. For example, if a 12-pack of soda costs $6, the unit price is $6 ÷ 12 = $0.50 per soda.

Front

What is a Ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other. For example, the ratio of 2 apples to 3 oranges can be written as 2:3.

Front

Which is the better buy: 12 cookies for $3.00 or 8 cookies for $2.40?

Back

The better buy is 12 cookies for $3.00, which has a unit price of $0.25 per cookie.

Front

If a 15 oz bag of chips costs $4.50, what is the cost per ounce?

Back

The cost per ounce is $4.50 ÷ 15 = $0.30 per ounce.

Front

What does it mean if two ratios are equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities. For example, the ratios 1:2 and 2:4 are equivalent.

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

What is the unit price of Oreos if they cost $3.00 for 15 oz?

Back

The unit price of Oreos is $3.00 ÷ 15 = $0.20 per ounce.

Front

If 6 candy bars cost $8.22, how much does one candy bar cost?

Back

One candy bar costs $8.22 ÷ 6 = $1.37.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units. For example, speed is a rate that compares distance to time.