1. Scale Drawings & Models Fractions, Decimals & Percents
MJ2A – Ch 6 Study Guide
Ratios &
Rates
Scale Drawings & Models
Proportions
Fractions, Decimals & Percents
Percent Proportion
Percent of Change
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2. Express as a fraction in simplest form
Ratio & Rates 100
Express as a fraction in simplest form
9 Students out of 33 students
Answer: 3/11

3. Express as a fraction in simplest form
Ratio & Rates 200
Express as a fraction in simplest form
12 hits out of 16 times at bat
Answer: 3/4

4. Express as a fraction in simplest form
Ratio & Rates 300
Express as a fraction in simplest form
30 hours to 18 hours
Answer: 5/3

5. Express as a fraction in simplest form
Ratio & Rates 400
Express as a fraction in simplest form
5 quarts to 5 gallons
Answer: 1/4

6. Express as a fraction in simplest form
Ratio & Rates 500
Express as a fraction in simplest form
10 inches to 4 feet
Answer: 5/24

7. On a map of Florida the scale is 1in = 20 mi.
Scale Drawing & Models 100
On a map of Florida the scale is 1in = 20 mi.
If the distance between Tampa and St. Petersburg is 2 inches, how many miles is that?
Answer: 40

8. Scale Drawing & Models 200
A model airplane is built using a 1:16 scale. On the model, the length of the wing span is 5.8 feet. What is the actual length of the wing?
Answer: 92.8 ft

9. Scale Drawing & Models 300
A builder is designing a swimming pool that is 8.5 inches on the scale drawing. If the scale is 1in = 6ft what is the actual length of the pool?
Answer: 51 feet

10. What is the scale factor?
Scale Drawing & Models 400
A set of landscape plans shows a flower bed that is 6.5 inches wide. The scale on the plan is 1 in = 4 ft
What is the scale factor?
Answer: 1/48

11. Daily Double! Scale Drawing & Models 500
A man in a photograph is 1.5 inches in height. If the man is 6 ft tall, what is the scale?
Answer: 1in = 4 ft

12. Determine if the pair of ratios form a proportion:
Proportions 100
Determine if the pair of ratios form a proportion: ,
Answer: Yes

13. Proportions 200
Solve the proportion:
7 x
45 9 =
Answer: x = 1.4

14. Proportions 300
Solve the proportion:
a 4 =
Answer: a = 0.8

15. Proportions 400 Solve the proportion: 8 pencils in 2 boxes
20 pencils in x boxes
Answer: 5 boxes

16. Proportions 500 Solve the proportion: y dollars for 5.4 gallons
Answer: y = $25.20

17. Fractions, Decimals & Percents 100
Express as a fraction in simplest form
45%
Answer: 9/20

18. Fractions, Decimals & Percents 200
Express as a fraction in simplest form
0.5%
Answer: 1/200

19. Fractions, Decimals & Percents 300
Express the fraction as a percent 5 8
Answer: 62.5%

20. Fractions, Decimals & Percents 400
Express the decimal as a percent.
0.0008
Answer: 0.08%

21. Fractions, Decimals & Percents 500
Express the percent as a decimal
12 ½ %
Answer:

22. Percents Proportion 100
72 is what percent of 160?
Answer: 45%

23. Percents Proportion 200 36 is 72% of what number?
Answer: 50

24. Percents Proportion 300
What is 84% of 150?
Answer: 126

25. Percents Proportion 400 14 is 12½ % of what number?
Answer: 112

26. Percents Proportion 500 36 is 8¾% of what number?
Answer: 411.4

27. Percent of Change 100
Find the percent of change from $9.25 to $ State if increase or decrease
Answer: 29.7% decrease

28. Percent of Change 200
Find the percent of change from 75 minutes to 100 minutes. State if increase or decrease
Answer: 33.3% Increase

29. Percent of Change 300
Find the percent of change from 15 songs to 105 songs. State if increase or decrease
Answer: 600% Increase

30. Percent of Change 400
Using the formula I=prt, determine how long it would take to earn $495 interest on $2,000 invested at a rate of 4.5%
Answer: 5.5 years

31. Percent of Change 500
Using the formula I=prt, determine the interest rate on $1600 invested for 6 years which earned $456 in interest
Answer: 4.75%