Ratios, Rates, and Unit Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different kinds of quantities, often expressed as a quantity per unit of another quantity.

Front

What is a unit rate?

Back

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

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the first quantity by the second quantity to find out how much of the first quantity corresponds to one unit of the second.

Front

If a cashier serves 16 customers in 8 minutes, what is the unit rate?

Back

2 customers per minute.

Front

If John eats 15 hotdogs in 3 minutes, what is his unit rate?

Back

5 hotdogs per minute.

Front

If Maya earns $10 an hour, how long will it take her to earn $150?

Back

15 hours.

Front

What is the ratio of squares to circles if there are 3 squares and 5 circles?

Back

3:5.

Front

If you travel at a speed of 60 miles per hour for 4 hours, how far do you go?

Back

240 miles.

Front

What is the formula for calculating a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.