Ratios and Rates Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a:b'.

Front

How do you find the unit rate?

Back

To find the unit rate, divide the total amount by the number of units. For example, if 8 pounds of apples cost $24, the unit rate is $24 ÷ 8 = $3 per pound.

Front

What is the ratio of girls to total students if there are 15 girls and 13 boys?

Back

The ratio of girls to total students is 15:28.

Front

If Peyton has 21 pencils and 36 pens, how many pencils would he have if he only had 12 pens?

Back

Peyton would have 7 pencils.

Front

What does it mean if two ratios are equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they simplify to the same fraction.

Front

How can you compare earnings per hour between two people?

Back

To compare earnings per hour, calculate the unit rate for each person by dividing their total earnings by the total hours worked.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different kinds of quantities, such as miles per hour or cost per item.

Front

If 8 pounds of apples cost $24, how much do 10 pounds cost?

Back

10 pounds of apples would cost $30.

Front

What is the formula to find a missing value in a ratio table?

Back

To find a missing value in a ratio table, use cross-multiplication or set up a proportion based on the known values.

Front

What is the ratio of boys to girls in a class with 13 boys and 15 girls?

Back

The ratio of boys to girls is 13:15.