5.1-5.4 review

Understand ratios

100

A bag contains 8 red marbles and 12 blue marbles.

write the ratio of red to blue marbles in two different ways

8:12 

8 to 12

8/12

200

A bag contains 8 red marbles and 12 blue marbles.

write the ratio of red marbles to total marbles in two different ways 

8:20 

8 to 20 

8/20

300

1. There are 10 girls and 15 boys in a class. Write the ratio of girls to boys in one way.

10 to 15

10:15

10/15

400

Which ratio correctly represents the statement:
“For every 4 dogs, there are 6 cats.”

4 : 6 

6 : 4

10 : 1

2 : 3

4:6

500

Explain what the ratio 3 : 5 means using a real-world example.

3 of this to 5 of that 

Generate Equivalent Ratios

100

The ratio of apples to oranges is 3 : 5. Write two equivalent ratios

6:10

9:15

12:20

200

show ratios equivalent to 2 : 7

4:14

6:21

300

Write two equivalent ratios for 4 :6

8:12

12:18

16:24

400

True or False: The ratios 5 : 9 and 15 : 27 are equivalent.
Explain your reasoning.

True. Both terms in 5:9 were multiplied by 3 to get 15:27

500

Write two equivalent ratios for 24 : 36

12:18

48:72

Compare Ratios

100

In Mrs. Washington’s class, there are 2 students in band for every 3 students in chorus. In Mr. Utley’s class there are 5 students in band for every 7 students in chorus. Complete the ratio tables. Which class has a greater ratio of students in band to students in chorus?

Mr. Utleys with 5:7

200

13. A recipe uses 2 cups of sugar for every 3 cups of flour. Another recipe uses 4 cups of sugar for every 7 cups of flour.
    Which recipe is sweeter?

2:3 recipe

300

14. Which is the better deal? Explain.

• Pack A: 6 pencils for $3
• Pack B: 10 pencils for $6

Pack A: 

Has 24 pencils for $12 compared to Pack B having 20 pencils for $12.

400

Compare the ratios 7:10 and 8:12

7:10 is greater than 8:12.

500

Compare the ratios 2:3 and 4:5.

4:5 is greater than 2:3.

Ratios

100

A video game awards 15 points for every 3 levels completed. How many points are earned for 9 levels?

45 points

200

A classroom has a ratio of 4 computers for every 5 students. How many computers are needed for 20 students?

16 computers

300

The ratio of boys to girls across the school was 3:2. If there were 120 boys, how many girls were there? and How many students were there altogether?

80 girls

200 students

400

The ratio of concentrate to water is 1 part concentrate to 3 parts water. If the ratio is 12 parts concentrate, how many parts water?

36 ounces of water

500

Explain what a ratio is

A comparison between 2 quantities