Ratios & Proportions

Simplify the ratio of
20 to 25

• to 5

• to 5

• to 5

• to 5

Simplify the ratio of
35 : 14

• 5 : 2

• 2 : 5

• 3 : 1

• 35: 14

What is a Ratio?

• Is a comparison of two quantities 

• A rate with a denominator of one

• It is when the only factor the numerator and denominator share is a one 

• Two decimals that can be multiplied

Solve the proportion.

• k=5

• k=3.3333333

• k=60

• k=90

You travel 150 miles on 5 gallons. How far did you travel per gallon?

• 15 miles

• 30 miles

• 3 miles

• 25 miles

Solve for x:  6/12 = x / 6

• 36

• 2

• 12

• 3

Solve for x: 
x/4 = 6/8

• 4

• 2

• 3

• 10

If there are 5 soccer players, 10 baseball players, and 15 basketball players, what is the ratio of baseball players to soccer players?

• 1 : 2

• 1 : 3

• 2 : 1

• 3 : 1

Use the shapes in the picture to write the ratio of STARS to SQUARES.

• 3 to 2

• 2 to 4

• 4 to 2

• 3 to 4

There are 4 birds and 6 snakes. What is the ratio of birds to snakes?

• 6/4

• 4/6

• 1/3

• 10/16