Proportions, Percent Proportions and Unit Rates Test

Front

What is a proportion?

Back

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

Front

How do you find the unit rate?

Back

To find the unit rate, divide the quantity by the number of units. For example, if you travel 150 miles on 5 gallons, the unit rate is 150 miles ÷ 5 gallons = 30 miles per gallon.

Front

What does percent proportion mean?

Back

Percent proportion is a way to express a ratio as a fraction of 100. It is often used to find the percentage of a quantity.

Front

If a car travels 50 miles in 1 hour, what is its speed in miles per hour?

Back

The speed is 50 miles per hour.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply and then divide. For example, if a/b = c/d, then ad = bc.

Front

What is the formula for finding the percent of a number?

Back

The formula is: (part/whole) x 100 = percent.

Front

If there are 5 ice cream cones for every 3 brownies, how many cones are there for 24 brownies?

Back

There are 40 ice cream cones for 24 brownies.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, such as miles per hour or price per item.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and then multiply by 100.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.