Quiz about Proportions Teacher Table

Question 1

Your science teacher has a 1:200 scale model of the space shuttle Atlantis. Which of the proportions can you use to find the actual length (x) of Atlantis?

Accepted Answer

$$\frac{1}{200}\ =\ \frac{19.5}{x}$$

Answer

$$\frac{1}{200}\ =\ \frac{x}{19.5}$$

Answer

$$\frac{200}{19.5}\ =\ \frac{x}{1}$$

Answer

$$\frac{x}{200}\ =\ \frac{1}{19.5}$$

Question 2

The school team has 80 swimmers.
The ratio of 7th Grade swimmers to ALL swimmers is 5:16.
Write a proportion that gives the number of 7th grade swimmers (s) on the team.

Accepted Answer

$$\frac{5}{16}\ =\ \frac{s}{80}$$

Answer

$$\frac{5}{16}\ =\ \frac{80}{s}$$

Answer

$$\frac{5}{80}\ =\ \frac{s}{16}$$

Answer

$$\frac{16}{5}\ =\ \frac{s}{80}$$

Question 3

Are the two ratios proportional?

Accepted Answer

NO

Answer

YES

Question 4

Solve the proportion below

Accepted Answer

21

Answer

7

Answer

8

Answer

24

Question 5

Solve the proportion below:

Accepted Answer

6

Answer

42

Answer

2

Answer

28

Question 6

Use cross multiplication. Are these ratios proportional?

Accepted Answer

Yes

Answer

No

Question 7

Solve the proportion below:

Accepted Answer

11

Answer

418

Answer

2

Answer

38

Question 8

What is 20% of 75?

Accepted Answer

15

Answer

60

Answer

6

Answer

1.5

Question 9

What percent of 38 is 15?

Accepted Answer

39.5%

Answer

41.5%

Answer

42.6%

Answer

38.9%

Question 10

There is a jar of jellybeans on Mrs. Miller's desk. 40% of the jellybeans are red. If there are 55 jelly beans in the jar, how many are red?

Accepted Answer

22

Answer

20

Answer

24

Answer

25

Question 11

Fill in the missing number into the ratio table

Accepted Answer

15

Answer

5

Answer

25

Answer

12

Question 12

Fill in the missing number into the ratio table

Accepted Answer

11

Answer

55

Answer

3

Answer

10

Question 13

Question 13.

Accepted Answer

c

Answer

a

Answer

b

Answer

d

Question 14

To disinfect 1 quart of stream water to make it drinkable, you need to add 2 tablets of iodine. How many tablets do you need to disinfect 4 quarts?

Accepted Answer

8 tablets

Answer

4 tablets

Answer

5 tablets

Answer

6 tablets

Question 15

What are three ways to write a ratio for the amount of dogs compared to the number of cats.

Accepted Answer

11:7

Accepted Answer

11 to 7

Accepted Answer

11/7

Answer

7:11

Answer

12 to 7

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