Ratios

15 : 40 :: ___ : 48

• 12

• 8

• 6

• 18

21 : 12 :: 14 : ___

• 7

• 9

• 8

• 4

Is this pair similar?

• Yes

• No

At the Old Westie Car Show there were 15 Pontiacs, 18 Chevrolets, 12 Fords and 5 Ramblers. What was the ratio of Ramblers to the total number of cars in the Car Show?

• 5:45

• 10:1

• 1:10

• 50:5

What is a comparison of two quantities by division? 
Example: 
12/25 or 12 to 25 or 12:25

• unit rate

• ratio

• similar figures

• term

Simplify the ratio of
35 : 14

• 5 : 2

• 2 : 5

• 3 : 1

• 35: 14

Complete the ratio table

• 10, 35

• 12, 41

• 10, 41

• 10, 45

The ratio of red paint to yellow paint in a mixture is shown in the double number line above. How many teaspoons of yellow paint are in 4 batches?

• 20

• 4

• 12

• 15

Which numbers come next on the double number line?

• Sugar: 12

  Flour: 8

• Sugar: 12

  Flour: 18

• Sugar: 8

  Flour: 12

• I have no idea!

As president of the soccer club, Jerry had to order pins for the entire club. He knew there were 96 boys in the club, but did not know the number of girls. The coach told him that the ratio of girls to boys was 2:3. How many pins did Jerry have to order?

• 64 pins

• 160 pins

• 144 pins

• 192 pins