Proportions

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

Solve for x

• x = 16

• x = 28

• x = 1/26

• x = 26

Solve the proportion:

• 4

• 8

• 14

• 10

Tags

CCSS.7.RP.A.2B

What is a proportion?

• When two ratios can be simplified

• When two ratios are equivalent and show the same value

• When two ratios have the exact same numbers

• When two ratios can be multiplied by 2

Tags

CCSS.7.RP.A.2A

On a map, if one centimeter represents 25 kilometers, how many kilometers does 7 centimeters represent?

• 175
• 185
• 200
• 220

12 ounce shampoo bottle lasts Mike 16 weeks.  How long would you expect an 18-ounce bottle of the same brand to last him?

• 24 weeks
• 6 weeks
• 30 weeks
• 20 weeks

About 13 out of 20 homes have a personal computer.  On a street with 60 homes, how many would you expect to have a personal computer?

• 7 homes
• 39 homes
• 73 homes 
• 40 homes

A grading machine can grade 48 multiple-choice tests in 1 minute. How long will it take the machine to grade 300 tests?

• 6 minutes

• 6.25 minutes

• 5.25 minutes

• 5 minutes

Pat needs 14 sticks of pepperoni to make 28 pizzas.  How many sticks of pepperoni are needed to make 36 pizzas?  

• 15 pizzas
• 252 sticks
• 18 sticks
• 18 pizzas

Tags

CCSS.3.OA.A.1

CCSS.3.OA.A.3

CCSS.3.OA.D.8