Proportions Teacher Table

Your science teacher has a 1:200 scale model of the space shuttle Atlantis. Which of the proportions can you use to find the actual length (x) of Atlantis?

The school team has 80 swimmers.
The ratio of 7th Grade swimmers to ALL swimmers is 5:16.
Write a proportion that gives the number of 7th grade swimmers (s) on the team.

Are the two ratios proportional?

• YES

• NO

Solve the proportion below

• 21

• 7

• 8

• 24

Solve the proportion below:

• 42

• 6

• 2

• 28

Use cross multiplication. Are these ratios proportional?

• Yes

• No

Solve the proportion below:

• 418

• 2

• 38

• 11

What is 20% of 75?

• 15

• 60

• 6

• 1.5

What percent of 38 is 15?

• 39.5%

• 41.5%

• 42.6%

• 38.9%

There is a jar of jellybeans on Mrs. Miller's desk.  40% of the jellybeans are red.  If there are 55 jelly beans in the jar, how many are red?

• 20

• 22

• 24

• 25