Review Chapter 5 Test Ratios, Rates, and Proportions

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 of an item?

Back

To find the unit rate, divide the total cost by the number of items. For example, if a box of 35 diapers costs $6.99, the unit rate is $6.99 ÷ 35 = $0.20 per diaper.

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you use a ratio table?

Back

A ratio table lists pairs of numbers that form equivalent ratios. It helps in finding missing values in proportional relationships.

Front

If 4 boxes contain 48 pencils, how many pencils are in 8 boxes?

Back

96 pencils (since 4 boxes have 48 pencils, doubling the boxes to 8 will double the pencils).

Front

What is a proportion?

Back

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

Front

How do you solve for x in a proportion?

Back

Cross-multiply the terms and then solve for x. For example, if you have a proportion like a/b = c/d, then ad = bc.

Front

What is the formula for finding the rate?

Back

Rate = Distance ÷ Time. It tells you how much distance is covered in a certain amount of time.

Front

How do you determine the slowest reading rate?

Back

Calculate the rate for each option by dividing the number of pages by the time taken, then compare the rates.

Front

What is the value of A in a proportional relationship?

Back

To find the value of A, set up a proportion based on the known values and solve for A.