Ratio and Proportion

Front

What is a Ratio?

Back

A ratio is a comparison of two quantities.

Front

Solve for x: 5/7 = x/28

Back

x = 20

Front

What is Proportion?

Back

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

Front

If there are 8 apples and 4 oranges, what is the ratio of apples to oranges?

Back

The ratio of apples to oranges is 2:1.

Front

What does it mean if two ratios are in proportion?

Back

It means that the cross products of the ratios are equal.

Front

If 3 pencils cost $1.50, how much do 12 pencils cost?

Back

$6.00

Front

What is the ratio of boys to girls if there are 15 boys and 10 girls?

Back

The ratio of boys to girls is 3:2.

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

Solve for x: 12/x = 3/4

Back

x = 16

Front

What is an example of a real-life ratio?

Back

The ratio of 4 meatballs to 1 cup of sauce.