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Math Problems
Grade 8
Percent of change
What is the percent of change from
5
5
5
to
7
7
7
?
\newline
Choices:
\newline
(A)
2
%
2\%
2%
increase
\newline
(B)
2
%
2\%
2%
decrease
\newline
(C)
40
%
40\%
40%
increase
\newline
(D)
40
%
40\%
40%
decrease
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What is the percent of change from
6
,
000
6,000
6
,
000
to
9
,
000
9,000
9
,
000
?
\newline
Choices:
\newline
(A)
64
%
64\%
64%
decrease
\newline
(B)
64
%
64\%
64%
increase
\newline
(C)
50
%
50\%
50%
increase
\newline
(D)
50
%
50\%
50%
decrease
Get tutor help
What is the percent of change from
600
,
000
600,000
600
,
000
to
900
,
000
900,000
900
,
000
?
\newline
Choices:
\newline
(A)
46
%
46\%
46%
increase
\newline
(B)
50
%
50\%
50%
decrease
\newline
(C)
46
%
46\%
46%
decrease
\newline
(D)
50
%
50\%
50%
increase
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What is the percent of change from
4
4
4
to
3
3
3
?
\newline
Choices:
\newline
(A)
25
%
25\%
25%
decrease
\newline
(B)
1
%
1\%
1%
increase
\newline
(C)
25
%
25\%
25%
increase
\newline
(D)
1
%
1\%
1%
decrease
Get tutor help
What is the percent of change from
5
5
5
to
8
8
8
?
\newline
Choices:
\newline
(A)
3
%
3\%
3%
increase
\newline
(B)
3
%
3\%
3%
decrease
\newline
(C)
60
%
60\%
60%
decrease
\newline
(D)
60
%
60\%
60%
increase
Get tutor help
What is the percent of change from
50
50
50
to
90
90
90
?
\newline
Choices:
\newline
(A)
40
%
40\%
40%
decrease
\newline
(B)
80
%
80\%
80%
increase
\newline
(C)
40
%
40\%
40%
increase
\newline
(D)
80
%
80\%
80%
decrease
Get tutor help
What is the percent of change from
800
,
000
800,000
800
,
000
to
1
,
000
,
000
1,000,000
1
,
000
,
000
?
\newline
Choices:
\newline
(A)
28
%
28\%
28%
decrease
\newline
(B)
25
%
25\%
25%
increase
\newline
(C)
25
%
25\%
25%
decrease
\newline
(D)
28
%
28\%
28%
increase
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What is the percent of change from
2
2
2
to
1
1
1
?
\newline
Choices:
\newline
(A)
1
%
1\%
1%
increase
\newline
(B)
50
%
50\%
50%
decrease
\newline
(C)
50
%
50\%
50%
increase
\newline
(D)
1
%
1\%
1%
decrease
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What is the percent of change from
20
20
20
to
14
14
14
?
\newline
Choices:
\newline
(A)
30
%
30\%
30%
increase
\newline
(B)
6
%
6\%
6%
increase
\newline
(C)
30
%
30\%
30%
decrease
\newline
(D)
6
%
6\%
6%
decrease
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What is the percent of change from
100
100
100
to
91
91
91
?
\newline
Choices:
\newline
(A)
9
%
9\%
9%
decrease
\newline
(B)
9
%
9\%
9%
increase
\newline
(C)
14
%
14\%
14%
increase
\newline
(D)
14
%
14\%
14%
decrease
Get tutor help
What is the percent of change from
5
5
5
to
6
6
6
?
\newline
Choices:
\newline
(A)
1
%
1\%
1%
decrease
\newline
(B)
1
%
1\%
1%
increase
\newline
(C)
20
%
20\%
20%
decrease
\newline
(D)
20
%
20\%
20%
increase
Get tutor help
What is the percent of change from
80
80
80
to
20
20
20
?
\newline
Choices:
\newline
(A)
60
%
60\%
60%
decrease
\newline
(B)
60
%
60\%
60%
increase
\newline
(C)
75
%
75\%
75%
increase
\newline
(D)
75
%
75\%
75%
decrease
Get tutor help
What is the percent of change from
4
4
4
to
2
2
2
?
\newline
Choices:
\newline
(A)
100
%
100\%
100%
increase
\newline
(B)
100
%
100\%
100%
decrease
\newline
(C)
50
%
50\%
50%
decrease
\newline
(D)
50
%
50\%
50%
increase
Get tutor help
What is the percent of change from
5
5
5
to
6
6
6
?
\newline
Choices:
\newline
(A)
20
%
20\%
20%
decrease
\newline
(B)
22
%
22\%
22%
increase
\newline
(C)
20
%
20\%
20%
increase
\newline
(D)
22
%
22\%
22%
decrease
Get tutor help
What is the percent of change from
14
14
14
to
21
21
21
?
\newline
Choices:
\newline
(A)
50
%
50\%
50%
increase
\newline
(B)
55
%
55\%
55%
decrease
\newline
(C)
55
%
55\%
55%
increase
\newline
(D)
50
%
50\%
50%
decrease
Get tutor help
What is the percent of change from
96
96
96
to
24
24
24
?
\newline
Choices:
\newline
(A)
75
%
75\%
75%
increase
\newline
(B)
68
%
68\%
68%
decrease
\newline
(C)
75
%
75\%
75%
decrease
\newline
(D)
68
%
68\%
68%
increase
Get tutor help
What is the percent of change from
5
5
5
to
9
9
9
?
\newline
Choices:
\newline
(A)
84
%
84\%
84%
decrease
\newline
(B)
84
%
84\%
84%
increase
\newline
(C)
80
%
80\%
80%
decrease
\newline
(D)
80
%
80\%
80%
increase
Get tutor help
What is the percent of change from
40
40
40
to
44
44
44
?
\newline
Choices:
\newline
(A)
10
%
10\%
10%
decrease
\newline
(B)
15
%
15\%
15%
decrease
\newline
(C)
10
%
10\%
10%
increase
\newline
(D)
15
%
15\%
15%
increase
Get tutor help
What is the percent of change from
500
,
000
500,000
500
,
000
to
700
,
000
700,000
700
,
000
?
\newline
Choices:
\newline
(A)
4
%
4\%
4%
increase
\newline
(B)
40
%
40\%
40%
decrease
\newline
(C)
40
%
40\%
40%
increase
\newline
(D)
4
%
4\%
4%
decrease
Get tutor help
What is the percent of change from
400
,
000
400,000
400
,
000
to
700
,
000
700,000
700
,
000
?
\newline
Choices:
\newline
(A)
75
%
75\%
75%
decrease
\newline
(B)
75
%
75\%
75%
increase
\newline
(C)
67
%
67\%
67%
decrease
\newline
(D)
67
%
67\%
67%
increase
Get tutor help
What is the percent of change from
200
,
000
200,000
200
,
000
to
10
,
000
10,000
10
,
000
?
\newline
Choices:
\newline
(A)
95
%
95\%
95%
increase
\newline
(B)
112
%
112\%
112%
decrease
\newline
(C)
112
%
112\%
112%
increase
\newline
(D)
95
%
95\%
95%
decrease
Get tutor help
What is the percent of change from
800
,
000
800,000
800
,
000
to
1
,
000
,
000
1,000,000
1
,
000
,
000
?
\newline
Choices:
\newline
(A)
25
%
25\%
25%
increase
\newline
(B)
30
%
30\%
30%
increase
\newline
(C)
30
%
30\%
30%
decrease
\newline
(D)
25
%
25\%
25%
decrease
Get tutor help
What is the percent of change from
16
16
16
to
20
20
20
?
\newline
Choices:
\newline
(A)
25
%
25\%
25%
increase
\newline
(B)
4
%
4\%
4%
decrease
\newline
(C)
4
%
4\%
4%
increase
\newline
(D)
25
%
25\%
25%
decrease
Get tutor help
What is the percent of change from
800
,
000
800,000
800
,
000
to
1
,
000
,
000
1,000,000
1
,
000
,
000
?
\newline
Choices:
\newline
(A)
20
%
20\%
20%
increase
\newline
(B)
25
%
25\%
25%
decrease
\newline
(C)
25
%
25\%
25%
increase
\newline
(D)
20
%
20\%
20%
decrease
Get tutor help
What is the percent of change from
5
,
000
5,000
5
,
000
to
7
,
000
7,000
7
,
000
?
\newline
Choices:
\newline
(A)
40
%
40\%
40%
increase
\newline
(B)
39
%
39\%
39%
increase
\newline
(C)
39
%
39\%
39%
decrease
\newline
(D)
40
%
40\%
40%
decrease
Get tutor help
What is the percent of change from
10
10
10
to
8
8
8
?
\newline
Choices:
\newline
(A)
20
%
20\%
20%
decrease
\newline
(B)
25
%
25\%
25%
decrease
\newline
(C)
20
%
20\%
20%
increase
\newline
(D)
25
%
25\%
25%
increase
Get tutor help
What is the percent of change from
500
,
000
500,000
500
,
000
to
50
,
000
50,000
50
,
000
?
\newline
Choices:
\newline
(A)
112
%
112\%
112%
increase
\newline
(B)
112
%
112\%
112%
decrease
\newline
(C)
90
%
90\%
90%
increase
\newline
(D)
90
%
90\%
90%
decrease
Get tutor help
This year, Owen's Solar Systems, a growing solar panel manufacturer, hired
96
96
96
new employees. That is
20
%
20\%
20%
more than were hired last year. How many new employees were hired last year?
\newline
____ new employees
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The PTA at Danville High School hosts a dinner and auction every year to raise money for music and art programs. This year's event raised
$
72
,
837
\$72,837
$72
,
837
, which is
10
%
10\%
10%
less than last year's. How much was raised last year?
\newline
$
\$
$
____
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Mandy is looking over her credit card statements from the past couple of months. There is a balance of
$
8
,
790
\$8,790
$8
,
790
this month, which is
50
%
50\%
50%
less than last month. What was the balance last month?
\newline
$
\$
$
____
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This year's student population at Bowman Elementary School is
296
296
296
students. That is
20
%
20\%
20%
smaller than it used to be, prior to rezoning. What was the previous student population?
\newline
____ students
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The students at Newton High School have been planting trees as part of an ongoing service project. This month, they averaged
6
6
6
trees per participant. That is
25
%
25\%
25%
fewer trees than their average the last time they did it. What was their average last time?
\newline
____ trees
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This year's student population at Griffin Elementary School is
1
,
029
1,029
1
,
029
students. That is
5
%
5\%
5%
larger than it used to be, prior to rezoning. What was the previous student population?
\newline
____ students
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The cheerleading squad at Kingwood High School currently has
21
21
21
members. That is
5
%
5\%
5%
more than were on it with the old coach. How many members were on the squad before?
\newline
____ members
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Trisha recently played
77
77
77
consecutive games of soccer. That is
30
%
30\%
30%
shorter than her previous record for consecutive games. How many games was that?
\newline
____ consecutive games
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Judith has been keeping an eye on an emerald ring she likes. She just noticed that it has been marked down to
$
4
,
195
\$4,195
$4
,
195
, which is
50
%
50\%
50%
less than its original price. What was the original price of the ring?
\newline
$
\$
$
____
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A software company in Bluepoint currently bills clients
$
297
\$297
$297
per hour for work done by its consultants. That is
1
%
1\%
1%
less than the company used to charge before adjusting its rates. What was the previous hourly billing rate?
\newline
$
\$
$
____
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Today, Bonnie bought
17
17
17
apples from her local farmers' market. That number is
70
%
70\%
70%
higher than the number of apples Bonnie bought a few weeks ago. How many apples did Bonnie buy then?
\newline
____ apples
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The FAA tracks average flight delays. It found that, last year, a particular airline had an average flight delay of
10
10
10
minutes. So far this year, the airline has an average that is
50
%
50\%
50%
longer. What is the current year's average?
\newline
_
_
_
_
_
\_\_\_\_\_
_____
minutes
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Last quarter, a local gym had
95
95
95
members. This quarter, with a change in its rates, it has
20
%
20\%
20%
fewer. How many members are there now?
\newline
____ members
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Mrs. Garrett is interested in a particular bracelet. Its original price was
$
34
\$34
$34
, but it is now marked down by
50
%
50\%
50%
. What is the price of the bracelet now?
\newline
$
\$
$
____
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For a school project, Shawn is investigating cell phone use in his hometown, Springtown. It turns out that residents of Springtown used their cell phones for
2
,
930
2,930
2
,
930
minutes last year. It also turns out that they used them
10
%
10\%
10%
less this year. For how many minutes did the residents of Springtown use their cell phones this year?
\newline
____ minutes
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The FAA tracks average flight delays. It found that, this year, a particular airline has an average flight delay of
37
37
37
minutes. That is
85
%
85\%
85%
longer that the airline's average for the previous year. What was its average flight delay last year?
\newline
____ minutes
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A magician is training for an underwater escape trick. Using a new technique, she can hold her breath for
57
57
57
seconds. That is
50
%
50\%
50%
more than she was able to do when she first tried. How long could the magician hold her breath when she first tried?
\newline
____ seconds
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Alexandra is trying to drink more water, so she has been keeping a log of how much water she drinks. Yesterday, Alexandra drank
12
12
12
ounces of water. That is
25
%
25\%
25%
less than she drank two days ago. How much water did Alexandra drink two days ago?
\newline
____ ounces
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Josiah is trying to drink more water, so he has been keeping a log of how much water he drinks. Josiah drank
60
60
60
ounces of water two days ago. Yesterday, he drank
65
%
65\%
65%
more than that amount. How much water did he drink yesterday?
\newline
____ ounces
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During summer vacation, Jennifer read, on average,
48
48
48
pages per night. Once she returned to school, she averaged
12
12
12
pages per night. What is the percent of decrease in Jennifer's reading?
\newline
____
%
\%
%
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Kylie needed
5
5
5
gallons of gas last week. This week, Kylie ended up needing
20
%
20\%
20%
less. How much gas is that?
\newline
_
_
_
_
\_\_\_\_
____
gallons
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Last year, a lighting supplier called Bright Idea shipped a total of
7
,
400
7,400
7
,
400
lamps to its distributors. This year, the supplier shipped
79
%
79\%
79%
more than that. How many lamps did Bright Idea ship this year?
\newline
____ lamps
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The depth of a lake in Georgetown changes over time due to rainfall and evaporation. A few months ago, the depth was
1
,
000
1,000
1
,
000
feet. Currently, the lake is
2
%
2\%
2%
less deep. What is this year's depth?
\newline
_
_
_
_
_
\_\_\_\_\_
_____
feet
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