Rates and Unit Rates

Front

What is a rate?

Back

A rate is a ratio that compares two different quantities, often with different units.

Front

What is a unit rate?

Back

A unit rate is a rate in which the second quantity is 1. It expresses how much of one quantity corresponds to one unit of another quantity.

Front

How do you calculate the cost per item?

Back

To find the cost per item, divide the total cost by the number of items.

Front

If 7 apples cost $4.55, what is the cost per apple?

Back

$0.65 per apple.

Front

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

Back

A rate compares two different quantities, while a unit rate has a denominator of 1.

Front

Which of the following is a unit rate: 10 miles / 2 hours or $6 for each hour?

Back

$6 for each hour.

Front

What is the ratio of boys to girls if there are 13 boys and 10 girls?

Back

The ratio of boys to girls is 13 to 10.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

Solve the proportion: 4/8 = x/10. What is x?

Back

x = 5.

Front

What is the formula for finding a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.