## Percent Practice Questions

Below are percent practice questions similar to what you will find on a standardized test. A variety of different types of questions is given – some may be classified as number manipulation, word problems, arithmetic reasoning.

If you can do these problems, you should have no trouble doing percent questions on a standardized test!

**1. 15 is what percent of 200?**

a. 7.5%

b. 15%

c. 20%

d. 17.50%

**2. A boy has 5 red balls, 3 white balls**** and 2 yellow balls. What percent of the**** balls are yellow?**

a. 2%

b. 8%

c. 20%

d. 12%

**3. Add 10% of 300 to 50% of 20**

a. 50

b. 40

c. 60

d. 45

**4. Convert 75% to a fraction.**

a. 2/100

b. 85/100

c. 3/4

d. 4/7

**5. Multiply 3 by 25% of 40.**

a. 75

b. 30

c. 68

d. 35

**6. What is 10% of 30 multiplied by 75% of 200?**

a. 450

b. 750

c. 20

d. 45

**7. Convert 4/20 to percent.**

a. 25%

b. 20%

c. 40%

d. 30%

**8. Convert 0.55 to percent.**

a. 45%

b. 15%

c. 75%

d. 55%

**9. What number is the largest? **

a. 5 % of 400

b. 25% of 4000

c. 2 % of 500

d. 8% of 1000

**10. In a class of 83 students, 72 are present. What percentage of the students are absent? Provide answer up to two significant digits.**

a. 12

b. 13

c. 14

d. 15

**11. What is 6 more than 50% of 50? **

a. 31

b. 41

c. 25

d. 26

**12. In a local election at polling station A, 945 voters cast their vote out of 1270 registered voters. At polling station B, 860 cast their vote out of 1050 registered voters and at station C, 1210 cast their vote out of 1440 registered voters. What is the total turnout including all three polling stations?**

a. 70%

b. 74%

c. 76%

d. 80%

**13. What is 25 more than 30% of 120? **

a. 75

b. 50

c. 61

d. 35

**14. What is the smallest value?**

a. 4 % of 4

b. 5 % of 5

c. 0.3% of 12

d. 1/5 of 100

**15. 8 is what percent of 40?**

a. 10%

b. 15%

c. 20%

d. 25%

**16. A woman spent 15% of her income on an item and ends up with $120.****What percentage of her income is left?**

a. 12%

b. 85%

c. 75%

d. 95%

**17. .4% of 36 is**

a. 1.44

b. .144

c. 14.4

d. 144

**18. The price of a book went from $20 to $25. What percent did the price increase?**

a. 5%

b. 10%

c. 20%

d. 25%

**Answer Key**

**1. A**

15/200 = X/100

200X = (15 * 100)

1500/200 Cancel zeroes in the numerator and denominator 15/2 = 7.5%.

Notice that the questions asks, What 15 is what percent of 200? The question does **not** ask, what is 15% of 200! The answers are very different.

**2. C**

Total no. of balls = 10, no. of yellow balls =

2, answer = 2/10 X 100 = 20%.

**3. B**

10% of 300 = 30 and 50% of 20 = 10 so 30 + 10 = 40.

**4. C**

75%= 75/100 = 3/4

**5. B**

25% of 40 = 10 and 10 x 3 = 30

**6. A**

10% of 30 = 3 and 75% of 200 = 150, 3 X

150 = 450

**7. B**

4/20 X 100 = 1/5 X 100 = 20%

**8. D**

0.55 X 100 = 55%

**9. B**Here are the choices:

a. 5% of 400 = 20

b. 25% of 4000 = 1000

c. 2% of 500 = 10

d. 8% of 1000 = 80

D is the largest.

**10. B**Absent students = 83 – 72 = 11

Percentage of absent students = 11/83 X 100 = 13.25

Reducing up to two significant digits it will be 13.

**11. A **

50% of 50 = 25 + 6 = 31

**12. D**Total votes cast = 945 + 860 + 1210 = 3015

Total registered voters at all 3 polling stations = 1270 + 1050 + 1440 = 3760

Turnout = 3015/3760 X 100 = 80%

**13. C**30% of 120 = 36 + 25 = 61

**14. C**Here are the choices:

**a. 4% of 4 = .16**

b. 5% of 5 = 0.25

c. 0.3% of 12 = 0.036

d. 1/5 of 100 = 20

C is the smallest.

**15. C**

This is an easy question, and shows how you can solve some questions without

doing the calculations. The question is, 8 is what percent of 40. Take easy percentages

for an approximate answer and see what you get.

10% is easy to calculate because you can drop the zero, or move the decimal point.

10% of 40 = 4, and 8 = 2 X 4, so, 8 must be 2 X 10% = 20%.

Here are the calculations which confirm the quick approximation.

8/40 = X/100 = 8 * 100 / 40X = 800/40 = X = 20

**16. B**

Spent 15% – 100% – 15% = 85%

**17. B**

.4/100 * 36 = .4 * 36/100 = .144

**18. D**

Price increased by $5 ($25-$20). to calculate

the percent increase:

5/20 = X/100

500 = 20X

X = 500/20

X = 25%

#9 answer should be B 25% of 4000 = 1000, instead of D.

Oops! thanks you!