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Math Problems
Grade 7
Percent of change
After changing the amount of time he works, Samuel has begun earning a salary of
$
48
,
854
\$48,854
$48
,
854
. That is
48
%
48\%
48%
less than before. How much did Samuel's salary use to be?
\newline
$
\$
$
____
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This season, Westford Theater sold
6
,
149
6,149
6
,
149
tickets to Shakespearean plays. That is
30
%
30\%
30%
more than the theater sold last season. How many tickets to Shakespearean plays did the theater sell last season?
\newline
____ tickets
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Alvin's salary used to be
$
17
,
100
\$17,100
$17
,
100
. After changing the amount of time he works, Alvin has begun earning
41
%
41\%
41%
more. What is Alvin's salary now?
\newline
$
\$
$
____
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As part of an ongoing service project, the students at Danville High School recently spent an afternoon planting trees. They planted an average of
2
2
2
trees per participant. This month, they plan to do more planting, averaging
50
%
50\%
50%
fewer trees per participant this time. What will be the average this month?
\newline
____ trees
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For a school project, Lillian is investigating cell phone use in her hometown, Wildgrove. It turns out that residents of Wildgrove used their cell phones for
455
,
420
455,420
455
,
420
minutes last year. It also turns out that they used them
40
%
40\%
40%
less this year. For how many minutes did the residents of Wildgrove use their cell phones this year?
\newline
_
_
_
_
\_\_\_\_
____
minutes
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What is the percent of change from
4
4
4
to
7
?
7?
7
?
\newline
(A)
75
%
75\%
75%
decrease
\newline
(B)
75
%
75\%
75%
increase
\newline
(C)
3
%
3\%
3%
increase
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Last month, Thompson Trucking Company hauled
1.1
×
1
0
5
1.1 \times 10^5
1.1
×
1
0
5
pounds of produce. That was an increase from the month before, when they hauled
7.5
×
1
0
4
7.5 \times 10^4
7.5
×
1
0
4
pounds of produce. How much more produce did they haul last month than the month before? Write your answer in standard form. Do not use exponents.
\newline
____ pounds
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Kong took
15
%
15\%
15%
fewer seconds than Nolan took to complete his multiplication timed test. Kong took
85
85
85
seconds.
\newline
How many seconds did Nolan take?
\newline
□
\square
□
seconds
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Joseph's Books sold
741
741
741
bookmarks this year. That is
90
%
90\%
90%
more than the store sold last year. How many bookmarks did Joseph's Books sell last year?
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A family's home is currently worth
$
560
,
097
\$560,097
$560
,
097
, which is
10
%
10\%
10%
lower than the home was worth when they bought it. What was the value of the home when they bought it?
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Cody was
165
c
m
165 \mathrm{~cm}
165
cm
tall on the first day of school this year, which was
10
%
10 \%
10%
taller than he was on the first day of school last year.
\newline
How tall was Cody on the first day of school last year?
\newline
______
c
m
\mathrm{cm}
cm
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Samantha has a coin collection. She keeps
2
2
2
of the coins in her box, which is
25
%
25 \%
25%
of the collection. How many total coins are in her collection?
\newline
Answer:
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Cooper invests money in an account paying simple interest. He invests
$
150
\$ 150
$150
and no money is added or removed from the investment. After one year, he has
$
156
\$ 156
$156
. What is the simple percent interest per year?
\newline
Answer:________
%
\%
%
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Samir went shopping for a new pair of pants. To find the total plus tax, he multiplied the price of the pair of pants by
1
1
1
.
09
09
09
. What percent tax did he pay?
\newline
Answer:
%
\%
%
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In a newspaper, it was reported that yearly robberies in Springfield were down
50
%
50 \%
50%
to
35
35
35
in
2011
2011
2011
from
2010
2010
2010
. How many robberies were there in Springfield in
2010
2010
2010
?
\newline
Answer:
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In a newspaper, it was reported that yearly robberies in Springfield were down
25
%
25 \%
25%
to
108
108
108
in
2013
2013
2013
from
2012
2012
2012
. How many robberies were there in Springfield in
2012
2012
2012
?
\newline
Answer:
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In a newspaper, it was reported that yearly robberies in Springfield were up
20
%
20 \%
20%
to
186
186
186
in
2014
2014
2014
from
2013
2013
2013
. How many robberies were there in Springfield in
2013
2013
2013
?
\newline
Answer:
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In a newspaper, it was reported that the number of yearly robberies in Springfield in
2010
2010
2010
was
135
135
135
, and then went up by
20
%
20 \%
20%
in
2011
2011
2011
. How many robberies were there in Springfield in
2011
2011
2011
?
\newline
Answer:
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In a newspaper, it was reported that yearly robberies in Springfield were down
20
%
20 \%
20%
to
108
108
108
in
2012
2012
2012
from
2011
2011
2011
. How many robberies were there in Springfield in
2011
2011
2011
?
\newline
Answer:
Get tutor help
In a newspaper, it was reported that the number of yearly robberies in Springfield in
2013
2013
2013
was
225
225
225
, and then went up by
28
%
28 \%
28%
in
2014
2014
2014
. How many robberies were there in Springfield in
2014
2014
2014
?
\newline
Answer:
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In a newspaper, it was reported that yearly robberies in Springfield were up
6
%
6 \%
6%
to
265
265
265
in
2012
2012
2012
from
2011
2011
2011
. How many robberies were there in Springfield in
2011
2011
2011
?
\newline
Answer:
Get tutor help
What is the percent of change from
4
4
4
to
7
7
7
?
\newline
(A)
75
%
75\%
75%
decrease
\newline
(B)
75
%
75\%
75%
increase
\newline
(C)
3
%
3\%
3%
increase
\newline
(D)
3
%
3\%
3%
decrease
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What is the percent of change from
4
4
4
to
7
7
7
?
\newline
(A)
75
%
75\%
75%
decrease
\newline
(B)
75
%
75\%
75%
increase
\newline
(C)
3
%
3\%
3%
increase
\newline
(D)
3
%
3\%
3%
decrease
Get tutor help
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