Review: 7th Grade Proportionality

A drawing of a logo that will appear on a sign uses a scale in which 1.5 centimeters represents 30 inches. The logo contains a regular pentagon with each side measuring 2.5 cm on the scale drawing.

What is the perimeter in inches of the regular pentagon that will appear on the sign?

• 40 in

• 50 in

• 200 in

• 250 in

A 2-liter bottle of liquid contains approximately 0.65 gallon. Which measurement is closest to the number of liters in 8 gallons?

• 24.6 L

• 16 L

• 60.4 L

• 2.6 L

Two similar figures are shown.

Which proportion is NOT true?

The ratio for large dogs to small dogs is 3:30 for an animal shelter. There are 12 large dogs in the shelter. What is the total amount of small dogs in the shelter?

• 120

• 90

• 7.5

• 10

The weight of a dog is 42.2 pounds. An object with a weight of 1 pound has a mass that is approximately equal to 0.45 kilogram.

Which measurement is closest to the mass of the dog in kilograms?

• 93.7 kg

• 189.9 kg

• 9.37 kg

• 18.99 kg

A home printer prints 84 blank and white pages in 1.5 minutes. What is the rate in pages per minute for black and white printing?

A shopper pay $5.95 for 7 pounds of potatoes. What is the price per pound for potatoes? (a)  

• $0.85
• $41.65
• $4.16
• $1.17

On a test, Matilda answered 12 out of the first 15 problems correctly. If this rate continues, how many of the next 25 problems will she answer correctly?

• 20 problems

• 22 problems

• 24 problems

• 28 problems

Tags

CCSS.6.EE.B.7

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

A dive had descended 64 feet underwater after 4 minutes. After 6 minutes, the diver had descended 96 feet underwater.

What is the constant of proportionality that relates the number of feet descended (y) , to the number of minutes, (x)?

• 24

• 16

The ratio of blue to yellow to green socks at Academy is 8:2:5. There are 56 blue socks currently at Academy. Complete the sentences about socks.

There are (a)   green socks. The store has a total of​ (b)   socks.

• 35
• 105
• 48
• 7
• 14
• 84
• 91
• 70