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Chapter 7 Math Mammoth Review

Total questions: 20

Worksheet time: 1hrs 13mins

Name
Class
Date
1.

What is 35% as a decimal?

(a)  

2.

What is 0.452 as a percent?

a)

45.2%

b)

4.52%

c)

0.452%

d)

452%

3.

What number is 40% of 80?

a)

30

b)

32

c)

320

d)

40

4.

16 is what percent of 80?

a)

20%

b)

200%

c)

128%

d)

12.8%

5.

Of the 160 7th graders at CMS, 96 donate canned goods to the food drive. What percent of the 7th graders donated food?

a)

60%

b)

66%

c)

96%

d)

99%

6.

12 is 40% of what number?

(a)  

7.
An archaeologist estimated that a fossil was 520 years old. It was actually 500 years old. What was the percent error?
a)
4%
b)
20%
c)
3.8%
d)
none of these
8.

You take out a car loan. How much will you pay in total for the car, if your loan is for $8000, at a rate of 5% interest, over 3 years?

a)

$1,200

b)

$120

c)

$920

d)

$9,200

9.

What is the interest on a savings account at a rate of 2%, given a starting amount of $575, over 1 year's time?

a)

$115

b)

$586.50

c)

$11.50

d)

$1.50

10.

What would be the total amount of your student loan, if you had to pay back a loan of $10,550, at a rate of 3% over the course of 10 years ?

a)

$13,715

b)

$3165

c)

$31,650

d)

$10,550

11.
Dan borrowed $2,000 for 6 months at 12% annual simple interest rate. How much interest is that?
a)
$120
b)
$144
c)
$1,200
d)
$1,440
12.

What is the sales tax?

Price $6.15

Tax 7%

a)

$6.58

b)

$0.43

c)

$6.22

d)

$43.05

13.

At a French restaurant, you order a salad for $2.50 and lasagna for $8.25. If the sales tax is 8%, what is the total of your bill including sales tax?

a)

$11.61

b)

$0.86

c)

$9.89

d)

$19.89

14.

Monica goes to Target. Her items total to $150. If she has a 40% discount, and 5% sales tax. How much will she pay?

a)

$90

b)

$94.50

c)

$176

d)

$106.50

15.

New ear buds cost $48. There is a 10% discount. What is the new cost?

a)

$38

b)

$4.80

c)

$43.20

d)

$52.80

16.

April buys a necklace that cost $38.25. There is a 6% sales tax. What is the price after tax?

a)

$38.31

b)

$22.95

c)

$40.55

d)

$35.96

17.
Find the percent of change 128 pounds is
increased to 155 pounds.
a)
82.58%
b)
21.09%
c)
17.41%
d)
12.09%
18.
4. A DVD movie originally cost $24.99. Its current price is $19.99. What is the percent of change rounded to the nearest percent?
a)
20%
b)
20.008%
c)
25%
d)
25.01%
19.
Mrs.Mroc has 35 students in her science class.If her class increases to 42 students next year, what will be the percent of change?
a)
20%
b)
75%
c)
93%
d)
33%
20.

A computer that originally costs $929 was returned to the electronics store. Because the box was opened, the store put it on the clearance rack for 35% off. What is the price of the computer?

a)

$325.15

b)

$1,254.15

c)

$603.85

d)

$500