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Percent Change/Error

Total questions: 30

Worksheet time: 1hrs 21mins

Name
Class
Date
1.
Ms Thomas bought some stock for $15 a share and sold it at $20 a share. Find the approximate percent of change in the price of the stock.
a)
Increase of 33.3%
b)
Increase of 30%
c)
Decrease of 33.3%
d)
Decrease of 30%
2.
Lacey bought a new purse that originally cost $25 and is on sale for $15. Find the percent of change in the price in the purse.
a)
Decrease of 40%
b)
Decrease of 10%
c)
Decrease of 30%
d)
Decrease of 20%
3.
Jose started doing extra chores around the house and his allowance changed from $30 per week to $40 per week. What is the approximate percent of change in Jose's allowance?
a)
Increase of 33.3%
b)
Increase of 25%
c)
Increase of 30.3%
d)
Increase of 38%
4.
Wal Mart sold 100 CD's during the month of October and only 60 during the month of November. Find the percent of decrease in the amount of CD's sold during the last 2 months.
a)
40%
b)
66.7%
c)
35%
d)
63.3%
5.
Mrs. Banks bought a car for $25,000 and sold it 5 years later for $16,000. Find the percent decrease for the price of the car.
a)
36%
b)
9%
c)
34%
d)
26%
6.
Jason had a salary change from $150 a week to $175 a week. What is the approximate percent increase of his salary?
a)
16.7%
b)
18.6%
c)
14.7%
d)
20.6%
7.
The price of computers decreased from $1500 to $1200. What is the percent of change in the price of the computes?
a)
20%
b)
30%
c)
25%
d)
35%
8.
Cody weighed 110 pounds when he started 6th grade but now weighs 150 pounds as a 7th grader. What is the approximate percent of increase in his weight?
a)
36.36%
b)
26.26%
c)
33.3%
d)
38.38%
9.
The original price of a camera was $50 and the sale price this week is $38. What is the percent of change in the price of the camera?
a)
24%
b)
12%
c)
20%
d)
22%
10.
Tom's math grade changed from an 80 in the first six weeks to a 90 the second six weeks. What was the percent of increase in his grade?
a)
12.5%
b)
16%
c)
10%
d)
8.5%
11.
The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the percent error?
a)
16.67%
b)
20%
c)
2500%
d)
80%
12.
The students measured length during a science experiment, they got 12 cm. But the actual measurement was 14.25 cm. What was the approximate percent error?
a)
15.79%
b)
18.75%
c)
2.25%
d)
18%
13.
The deer population is estimated to be 17,600 in northern Illinois, but an actual count was 21,300. What is the approximate percent error?
a)
21%
b)
17.8%
c)
17.4%
d)
21.02%
14.
Zed went to the store and bought a bag of chips.  He estimated there would be 350 chips in the package, but realized there were only 210 chips in that package.  What was his approximate percent error?
a)
35%
b)
67%
c)
85%
d)
92%
15.
Jessie estimates the weight of her cat to be 8 pounds.  The actual weight of the cat was 10 pounds.  Find the percent error.  
a)
15%
b)
20%
c)
25%
d)
30%
16.
Bob estimates that there will be 230 people who attend the concert.  There was an actual total of 300 people who attended.  Find the approximate percent error.  
a)
23%
b)
33%
c)
27%
d)
37%
17.
In one year Angelica’s height went from 60 inches to 63 inches. What was the percent of increase in Angelica’s height?
a)
0.05%
b)
4%
c)
4.8%
d)
5%
18.
A Toyota Sienna sells for $41,899.  A year later, the value is $36,469.  What is the percent change to the nearest tenth of a percent?
a)
12% increase
b)
13% decrease
c)
112% decrease
d)
113% increase
19.
The Polar Express movie is $13 and it will be on sale for $9.What is the approximate percent of change for this situation?
a)
15%
b)
31%
c)
10%
d)
32%
20.
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
21.
What is the total cost with sales tax?
Price $30.10
Tax 7%
a)
$35.00
b)
$25.18
c)
$2.11
d)
$32.21
22.

Mr. Barrett bought a new battery for his car. The battery cost $72. Since batteries are a taxable item, he had to pay a sales tax of 7.5%. What was the total cost of the battery in dollars and cents?

a)

$79.50

b)

$5.40

c)

$77.40

d)

$66.60

23.

Mrs. Adele is buying a new tie from Macy's. It says the tie costs $15.00 but there is a sign above it that says 25% off. How much will the tie cost?

a)

$3.75

b)

$18.75

c)

$15.25

d)

$11.25

24.
A pair of boots are $94.99.  They are 25% off. With this discount, what is the sale price? Round to nearest cent if necessary.
a)
$71.24
b)
$118.74
c)
23.7475
d)
$23.75
25.

Beth works at a car lot. This week she sells $23,200 in cars. She earns 4% commission for all the cars she sells. How much will she earn this week?

a)

24,128

b)

928

c)

1028

d)

92.8

26.

Leah buys an item for her store for $50. She marks up the price by 40%. How much will she sell the item for?

a)

20

b)

55

c)

30

d)

70

27.

Wilson Green sells home security systems. He earns an 11 percent commission on every system he sells. Wilson’s sales for this month totaled $4265. What is Wilson’s commission?

a)

$469.15

b)

$46,915

c)

$4,691.50

d)

$387.72

28.

Derek sells appliances. He is paid a 6.5 percent commission on every appliance he sells. Derek sold $9,732.00 worth of appliances this week. What is Derek’s commission?

a)

$632.58

b)

$63.258

c)

$6,325.80

d)

$143.38

29.

Randy gets fixed salary of $2000 per month and a commission of 2% on sales. If his total sales are $30,000 for the month, find his total salary for the month.

a)

$2,600

b)

$2,000

c)

$32,000

d)

$2,040

30.
Kimberly's family has a dinner bill of $26 and wants to leave a 15% tip for their server. How much tip are they leaving?
a)
29.90
b)
39.00
c)
4.00
d)
3.90