Rate and Unit Rate

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.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total amount by the number of units. For example, if you spend $3.75 for 3 pounds of granola, the unit rate is $3.75 ÷ 3 = $1.25 per pound.

Front

What is the unit rate if you spend $40 on 5 pounds of concrete?

Back

$8 per pound.

Front

What does a rate compare?

Back

A rate compares quantities with different units.

Front

If you travel 195 miles in 3 hours, what is your speed in miles per hour?

Back

65 miles per hour (195 miles ÷ 3 hours).

Front

How far will you travel in 5 hours at a speed of 65 miles per hour?

Back

325 miles (65 miles/hour × 5 hours).

Front

What is the price per gallon if it costs $46.80 to fill a 13-gallon gas tank?

Back

$3.60 per gallon.

Front

If a recipe calls for 2 cups of flour for 4 servings, what is the unit rate of flour per serving?

Back

0.5 cups of flour per serving (2 cups ÷ 4 servings).

Front

What is the unit rate of 60 miles in 2 hours?

Back

30 miles per hour (60 miles ÷ 2 hours).

Front

If you buy 3 notebooks for $9, what is the cost per notebook?

Back

$3 per notebook ($9 ÷ 3 notebooks).