Unit 2 & Lesson 3.1-3.2 Review HW

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to 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. For example, if you have 72 ounces for 12 servings, divide 72 by 12 to get 6 ounces per serving.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

How can you determine if a table represents a proportional relationship?

Back

To determine if a table represents a proportional relationship, check if the ratios of corresponding x and y values are the same.

Front

What percent is represented by 62 out of 100?

Back

62% is the percentage that represents 62 out of 100.

Front

How do you calculate a percentage of a given amount?

Back

To calculate a percentage of a given amount, multiply the amount by the percentage (in decimal form). For example, 5% of $50 is calculated as 50 * 0.05 = $2.50.

Front

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

Back

The formula for finding the percent of a number is: (Part/Whole) x 100 = Percent.

Front

If Johnny spent 5% of $50, how much did he spend?

Back

Johnny spent $2.50.

Front

What does it mean if two quantities are in a proportional relationship?

Back

It means that as one quantity increases or decreases, the other quantity does so at a constant rate.

Front

How can you express a ratio as a fraction?

Back

A ratio can be expressed as a fraction by placing the first quantity over the second quantity. For example, a ratio of 3 to 4 can be expressed as 3/4.