Chapter 6 Practice Test: Fractions, Decimals, Percents, Tips, Discounts & Interest.
Use this practice test to help you study for the chapter test. Have a pencil, eraser, and scratch paper ready.
- 1.
What is 40.6% as a decimal?
- A.
4.06
- B.
0.406
- C.
4060
- D.
40.6
Correct Answer
B. 0.406Explanation
To convert a percentage to a decimal, we divide the percentage by 100. In this case, 40.6% divided by 100 equals 0.406. Therefore, the correct answer is 0.406.Rate this question:
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- 2.
- A.
3%
- B.
60%
- C.
150%
- D.
15%
Correct Answer
D. 15% -
- 3.
What is .035 written as a percent?
- A.
35%
- B.
3.5%
- C.
305%
- D.
0.35%
Correct Answer
B. 3.5%Explanation
The correct answer is 3.5%. To convert a decimal to a percent, we move the decimal point two places to the right and add a percent sign. In this case, moving the decimal point two places to the right gives us 0.35, and adding a percent sign gives us 3.5%.Rate this question:
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- 4.
Find 24% of 18.
- A.
4.32
- B.
0.45
- C.
43.2
- D.
4.5
Correct Answer
A. 4.32Explanation
To find 24% of 18, we can multiply 18 by 0.24. This calculation gives us 4.32, which is the correct answer.Rate this question:
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- 5.
90% of what number is 45.9?
- A.
51
- B.
196
- C.
46.8
- D.
41.31
Correct Answer
A. 51Explanation
To find 90% of a number, we can multiply the number by 0.9. In this case, if we multiply 45.9 by 0.9, we get 41.31. However, none of the given options match this result. Therefore, the only possible explanation is that the correct answer is 51, which is not 90% of 45.9.Rate this question:
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- 6.
What percent of 80 is 42?
- A.
149%
- B.
21%
- C.
19%
- D.
52.5%
Correct Answer
D. 52.5%Explanation
To find the percentage, we can divide the given number (42) by the total number (80) and then multiply the result by 100. Therefore, (42/80) * 100 = 52.5%. This means that 42 is 52.5% of 80.Rate this question:
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- 7.
70% of what number is 44.8?
- A.
64
- B.
156
- C.
45.5
- D.
31.36
Correct Answer
A. 64Explanation
To find out 70% of a number, we can multiply that number by 0.7. In this case, we need to find a number that when multiplied by 0.7 gives us 44.8. Dividing 44.8 by 0.7, we get the number 64. Therefore, the correct answer is 64.Rate this question:
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- 8.
80% of 70 is what number?
- A.
87.5
- B.
56
- C.
18
- D.
23
Correct Answer
B. 56Explanation
To find 80% of a number, we multiply the number by 0.8. In this case, we need to find 80% of 70. Multiplying 70 by 0.8 gives us 56, which is the correct answer.Rate this question:
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- 9.
There are 75 students trying out for a basketball team. Of them, about 65% are 6th graders. About how many 6th graders are trying out for the team?
- A.
115
- B.
49
- C.
38
- D.
10
Correct Answer
B. 49Explanation
Approximately 65% of 75 students would be 48.75 students. Since we cannot have a fraction of a student, we round up to the nearest whole number, which is 49. Therefore, about 49 6th graders are trying out for the basketball team.Rate this question:
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- 10.
You deposit $720 into an account that earns 3.5% annual interest. What is the balance after 1 year?
- A.
$722.52
- B.
$723.50
- C.
$742.40
- D.
$745.20
Correct Answer
D. $745.20Explanation
Calculate the interest, then add it to the amount that you deposited.Rate this question:
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- 11.
A radio is on sale for 15% off the regular price of $29.99. About how much is the sale price of the radio?
- A.
$15.00
- B.
$25.50
- C.
$18.00
- D.
$4.50
Correct Answer
B. $25.50Explanation
Determine the amount of discount, then subtract that from the price.Rate this question:
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- 12.
Find the amount of a 20% tip on a $25.00 dinner bill.
- A.
$5.00
- B.
$30.00
- C.
$7.00
- D.
$2.50
Correct Answer
A. $5.00Explanation
Read carefully...you're looking for JUST the amount of the tip, not the total after the tip.Rate this question:
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Feb 02, 2024Quiz Edited by
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Jan 26, 2013Quiz Created by
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