1/3 Ratios and Equivalent Ratios

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 to b' or a:b.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What is an equivalent ratio?

Back

An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different.

Front

If the ratio of boys to girls in a class is 2:3, how many boys are there if there are 15 girls?

Back

There are 10 boys. (2/3 = x/15, so x = 10.)

Front

What is the ratio of 4 red apples to 3 green apples?

Back

The ratio is 4:3.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

Front

How do you find a missing value in a ratio?

Back

Use cross-multiplication or set up a proportion to solve for the missing value.

Front

What is the ratio of 10 soccer players to 3 coaches?

Back

The ratio is 10:3.

Front

If a teacher grades 25 assignments in 20 minutes, what is the rate of grading per assignment?

Back

The rate is 1.25 assignments per minute.

Front

What is the ratio of chocolate donuts to glazed donuts if there are 7 chocolate and 13 glazed?

Back

The ratio is 7:13.