Ratios and Proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you write a ratio?

Back

A ratio can be written in three ways: using a colon (e.g., 3:4), as a fraction (e.g., 3/4), or in words (e.g., '3 to 4').

Front

What is a proportion?

Back

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

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor.

Front

What is the ratio of boys to girls if there are 13 boys and 7 girls?

Back

The ratio of boys to girls is 13:7.

Front

If there are 20 students in total, what is the ratio of girls to total students if there are 7 girls?

Back

The ratio of girls to total students is 7:20.

Front

What is an example of a real-life ratio?

Back

An example of a real-life ratio is 4 meatballs to 1 cup of sauce.

Front

Convert the ratio 15 girls to 6 boys into simplest form.

Back

The simplest form of the ratio 15:6 is 5:2.

Front

What is the ratio of red marbles to yellow marbles if there are 2 red and 5 yellow?

Back

The ratio of red to yellow marbles is 2:5.

Front

If there are 4 oranges out of 6 total fruits, what is the ratio of oranges to fruit?

Back

The ratio of oranges to fruit is 4:6.