Ratio Cross Multiplication

How many pencils are there?

• 20 pencils

• 24 pencils

• 96 pencils

• 48 pencils

Which of the following ratios are equivalent?

• 1:3 and 3:1

• 4:6 and 8:6

• 8:7 and 16:12

• 22:14 and 11:7

What is an equivalent ratio to 3/4?

• 1/4

• 4/5

• 12/16

• 14/18

Kelly has 10 apps on her iPad. 5 are school apps, 2 are music apps, and 3 are games. What is the ratio of music apps to all apps?

• 5 to 2

• 10:5

• 3:20

• 1 to 5

How many ways can you write a ratio

• 1

• 3

• 2

• 4

Use cross multiplication to solve the missing term in the given proportion.

• 1

• 2

• 3

• 4

Find the missing number in the given proportion.

• 6

• 7

• 8

• 9

Find the missing number in the given proportion.

• 5

• 10

• 15

• 20

Express each ratio to its simplest form.

36 : 72

• 4 : 8

• 1 : 2

• 1 : 8

• 4 : 9

Express each ratio to its simplest form.

• 1 : 7

• 7 : 3

• 1 : 3

• 7 : 1