Proportions and Unit Rate

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, you can cross-multiply and then divide to find the unknown value.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit.

Front

If a car travels 150 miles in 3 hours, what is the unit rate in miles per hour?

Back

50 miles per hour.

Front

How do you find the unit rate from a ratio?

Back

Divide the first quantity by the second quantity to find the unit rate.

Front

If a recipe requires 4 cups of flour for 2 loaves of bread, what is the unit rate of flour per loaf?

Back

2 cups of flour per loaf.

Front

What is the relationship between proportions and equivalent fractions?

Back

Proportions are equivalent fractions that show two ratios are equal.

Front

If 5 apples cost $2, what is the cost of 1 apple?

Back

$0.40 per apple.

Front

How can you use proportions to solve real-world problems?

Back

You can set up a proportion based on the relationship between quantities and solve for the unknown.

Front

What is the formula for finding a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.