Ratio and Proportion Review

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 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, cross-multiply the terms and then solve for the variable.

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 of another quantity.

Front

How do you find the unit rate from a given quantity?

Back

To find the unit rate, divide the total quantity by the number of units.

Front

What does it mean for a relationship to be proportional?

Back

A relationship is proportional if the ratio between two quantities remains constant.

Front

If 405 rotations occur in 5 minutes, what is the unit rate in rotations per minute?

Back

81 rotations per minute.

Front

If 72 ounces are used for 12 servings, how many ounces are there per serving?

Back

6 ounces per serving.

Front

What is the formula for finding a unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

How can you check if two ratios are proportional?

Back

You can check if two ratios are proportional by cross-multiplying and seeing if the products are equal.