Ratios and Comparing Ratios

Which of the following ratios is equivalent to 2:3?

• 6:9

• 4:5

• 1:2

• 7:8

Which of the following ratios is equivalent to 5:8?

• 10:16

• 4:7

• 3:5

• 2:3

Find the missing value in the equivalent ratio: 3:5 = ?:20

• 4

• 8

• 12

• 16

Which of the following ratios is equivalent to 1:4?

• 3:5

• 6:10

• 7:11

• 2:8

The ratio of blue cards to green cards is 2 to 5. An equivalent ratio to 2 to 5 would be ​ (a)   to ​ (b)   .

• 14

• 35

• 2

• 5

• 7

• 3

• 10

• 13

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

Match the following

• 2:8

• 3

• 6:9

• 3

• 16:36

• 8

• 3:9

• 4

• 24:32

• 9

Chris and Jenny are comparing two similar punch recipes. Each recipe calls for cranberry juice and ginger ale but in different amounts. The tables to the left show the amounts of cranberry juice and ginger ale for four different quantities of punch. Is the ratio of the punch that is cranberry juice the same in Chris’s recipes as it is in Jenny’s recipes? If not, whose punch has a greater concentration of cranberry juice?

• No, there is no way to determine this.

• Chris had a higher concentration of cranberry juice. You have to extend the table for Chris. When Chris and Jenny both used 10 cups of cranberry juice. Chris had 40 cups of ginger ale and Jenny had 15 so Chris had a higher concentration of cranberry juice which means you can taste the cranberries more in his juice.

• Jenny had a higher concentration of cranberry juice. You have to extend the table for Chris. When Chris and Jenny both used 10 cups of cranberry juice. Chris had 40 cups of ginger ale and Jenny had 15 so Jenny had a higher concentration of cranberry juice because she used less ginger ale.

• Chris had a higher concentration of cranberry juice. You have to extend the table for Chris. When Chris and Jenny both used 10 cups of cranberry juice. Chris had 40 cups of ginger ale and Jenny had 15 so, Chris had a higher concentration of cranberry juice than ginger ale because he used more ginger ale.

Jessica made 8 out of 24 free throws. Bob made 5 out of 20 free throws. Who has the highest

free throw ratio and how do you know?

• Tulsi

• Gary

• They have the same ratio

Answer explanation