Review of Ratios and Proportions - Geometry

Simplify the ratio of

20 to 25

Mathematical Equivalence

ON

Write the ratio in simplest form.  Don't forget to make sure that you have the same units!
50 seconds: 2 minutes

Mathematical Equivalence

ON

Express the ratio as a fraction in simplest form:

18 ounces to 3 cups

Hint: there are 8 ounces in a cup.

• 3 to 4

• 6 to 1

• 18 to 3

• 1 to 6

Simplify the following ratio:

2 miles to 2640 feet

Hint: There are 5280 feet in a mile.

• 2:1

• 1:2

• 4:1

• 5:1

There are 80 students in Mr. Bass’ classes.  The ratio of boys to girls is 2 : 3.
How many boys are in the classes?
How many girls?

• Boys: 32
  Girls: 48
• Boys: 48
  Girls: 32
• Boys: 5
  Girls: 15
• Boys: 15
  Girls: 5

A cake recipe calls for 1.5 cups of milk and 3 cups of flour. Seth made a mistake and used 5 cups of flour. How many cups of milk should he use to keep the proportions correct?

• 2.5 cups milk
• 1.75 cups milk
• 2 cups flour
• 2.25 cups milk

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Mr. Rowley has 16 homework paper and 14 exit tickets to return.  Ms Rivera has 64 homework papers and 60 exit tickets to return.  For each teacher. write a ratio of the homework to the exit tickets.  Are they equivalent?

• yes, the ratios are both 8 to 7.
• yes, the ratios are both 16 to 15 
• No, they are not equivalent

A model of a lighthouse has diameter 8 inches and height 18 inches. If the actual diameter of the lighthouse is 20 feet, find its actual height.

• 30 ft

• 35 ft

• 45 ft

• 50 ft

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

CCSS.7.RP.A.3

A scale drawing of a billboard uses the scale 4 cm:9 ft. The length of the billboard in the drawing is 11 cm. How long is the actual billboard?

• 13 ft
• 20.75 ft
• 24.75 ft
• 22 ft

Mathematical Equivalence

ON