Ratio and Proportions

Front

What is a Ratio?

Back

It's a comparison of two things.

Front

What is a Proportion?

Back

An equation that states two ratios are equal.

Front

Solve for k: 2/3 = k/12

Back

k = 8

Front

Solve for n: 12/6 = 4/n

Back

n = 2

Front

What is the ratio of 3 red toy cars to 10 total toy cars?

Back

3:10

Front

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

Back

2:3

Front

Solve for p: 5/p = 15/45

Back

p = 15

Front

If there are 4 apples and 6 oranges, what is the ratio of apples to oranges?

Back

2:3

Front

What is the cross-multiplication method used for?

Back

To solve proportions by multiplying the means and extremes.

Front

If the ratio of boys to girls in a class is 3:4, how many girls are there if there are 12 boys?

Back

16 girls.