Rates, Ratios & 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 dollars per pound.

Front

If you travel 22 miles in 1 hour, what is the unit rate?

Back

22 miles per hour.

Front

How do you calculate the unit rate from a total cost and quantity?

Back

Divide the total cost by the quantity to find the cost per unit.

Front

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

Back

$8 per pound.

Front

What mathematical operation do ratios involve?

Back

Division.

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.

Front

Which of the following expresses a ratio? 2/3, two-thirds, 0.667, 2.3

Back

2/3.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different kinds of quantities, such as speed (miles per hour) or price (dollars per pound).

Front

If you run 5 miles in 9 minutes, what is the rate?

Back

5 miles in 9 minutes.

Front

What is the difference between a ratio and a unit rate?

Back

A ratio compares two quantities, while a unit rate compares a quantity to one unit of another quantity.