Name _________________________________________________ Date ____________ Period _______
Final Exam Review: Percents
To best be prepared for your test on Thursday you should complete and understand the questions in this study
guide. The questions on the test will be similar. Be sure that you know all of the work to show as work, to me, is
more important than the correct answer. That said, the correct answer is important too:)
Understanding Percent
1.
2.
3.
4.
5.
6.
69 out of 100 students play a musical instrument. What percent of the students play a musical
instrument?
2. Out of 100 bottles, 47 are filled with water. What percent of the bottles are filled with water?
Out of 100 apples in a basket, 80 are red apples. What percent of the apples are red apples?
A bag contains 20 marbles, of which 11 are green. What percent of the marbles are green?
Out of 50 books, 30 are novels. What percent of the books are novels?
16 out of 25 tables are wooden. What percent of the tables are wooden?
7. Of the 400 students at a carnival, 28 sell ride coupons.
a) What percent of the students at the carnival sell ride coupons?
b) What percent of the students at the carnival do not sell ride coupons?
8. Out of 1,800 flags, 36 are purple. What percent of the flags are not purple?
Converting Between Fractions, Decimals and Percent
Express each fraction or mixed number as a percent.
9.
11.
13. 7
10.
12. 2
14. 9
Express each decimal as a percent.
15. 0.46
17. 0.06
19. 6.03
16. 0.7
18. 1.52
20. 8.9
Express each percent as a fraction in simplest form.
21. 5.75%
23. 85.25%
22. 25.5%
24. 16 %
25. 42 %
26. 79 %
Express each fraction as a percent. Round your answer to the nearest whole number.
27.
28.
29.
Percent Word Problems
30. 2.85 kilograms of sugar is mixed with 3.15 kilograms of flour. What percent of this mixture is sugar?
31. A group of students were surveyed and asked to name their favorite fruit.
Fruit
Apples
Oranges
Strawberries
Pears
Peaches
Number of Students
30
15
40
25
10
a) What percent of students surveyed prefer strawberries?
b) What percent of students surveyed prefer the least favorite fruit?
c) What percent of students surveyed prefer apples or pears?
32. Jenny made 520 walnut biscuits. This is 40% of the total number of biscuits that she made. How many biscuits
did she make in all?
33. 28% of the eggs in a basket are quail eggs, and the rest are chicken eggs. There are 140 quail eggs. How many
eggs are in the basket in all?
34. Keith has 34% of his stamps in an album. If there are 204 stamps in the album, how many stamps does he have
in all?
35. 70 out of 350 calculators at a bookstore are scientific calculators.
a) What percent of the calculators are scientific calculators?
b) What percent of the calculators are not scientific calculators?
36. Of the 2,400 marathon participants, 1,800 of them wore headphones.
a) What percent of the participants wore headphones?
b) What percent of the participants did not wear headphones?