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Math Problems
Grade 7
Add and subtract decimals
A construction company bought
2.84
2.84
2.84
tons of gravel and
5.77
5.77
5.77
tons of sand. How many tons of material did the company buy in all?
\newline
\newline
_
_
_
_
\_\_\_\_
____
tons
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A bee colony produced
0.35
0.35
0.35
pounds of honey, but bears ate
0.12
0.12
0.12
pounds of it. How much honey remains?
\newline
_
_
_
_
\_\_\_\_
____
pounds
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Keenan bought a new roll of tape. There were
9.92
9.92
9.92
yards of tape on the roll. Then Keenan used
7.99
7.99
7.99
yards of the tape to make a collage. How much tape is left on the roll?
\newline
\newline
_
_
_
_
\_\_\_\_
____
yards
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A construction company bought
2.5
2.5
2.5
tons of gravel and
1.2
1.2
1.2
tons of sand. How many tons of material did the company buy in all?
\newline
\newline
_
_
_
_
\_\_\_\_
____
tons
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Monica weighed two colored metal balls during a science class. The green ball weighed
0.7
0.7
0.7
pounds and the blue ball weighed
0.1
0.1
0.1
pounds. If Monica places both balls on the scale at the same time, what will the scale read?
\newline
_
_
_
_
\_\_\_\_
____
pounds
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It snowed
9.6
9.6
9.6
inches on Monday and
9.3
9.3
9.3
inches on Tuesday. How much did it snow on Monday and Tuesday combined?
\newline
_____ inches
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Lacey mixed
0.4
0.4
0.4
grams of salt into a pot of soup she was cooking. Before she served the soup, Lacey added
0.4
0.4
0.4
grams of salt. How much salt did Lacey put into the soup in all?
\newline
\newline
_
_
_
_
\_\_\_\_
____
grams
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A bee colony produced
8.5
8.5
8.5
pounds of honey, but bears ate
5.8
5.8
5.8
pounds of it. How much honey remains?
\newline
_____ pounds
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Bernardo invested
$
2
,
000
\$2,000
$2
,
000
in two different types of stocks. The first type cost
$
32
\$32
$32
per share, and the second cost
$
48
\$48
$48
per share. Between the two types, he purchased a total of
47
47
47
shares. How many shares of the
$
48
\$48
$48
-per-share stock did he purchase?
\newline
◻
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31.572
÷
18
31.572 ÷18
31.572
÷
18
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5.44
+
0.256
5.44 + 0.256
5.44
+
0.256
=
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33.366
÷
6.7
=
33.366\div6.7=
33.366
÷
6.7
=
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Last month, Margo bought a tree that grows
2.5
c
m
2.5 \mathrm{~cm}
2.5
cm
each day. It was
5
c
m
5 \mathrm{~cm}
5
cm
tall when she bought it and now it is
65
c
m
65 \mathrm{~cm}
65
cm
tall. How many days has Margo owned the plant?
\newline
□
\square
□
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33.8
÷
2.6
=
33.8 \div 2.6 =
33.8
÷
2.6
=
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Evaluate:
\newline
(
14
(14
(
14
.
3
3
3
+
+
+
5
5
5
.
99
)
99)
99
)
−
2
×
1.6
-2\times1.6
−
2
×
1.6
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1.191
+
76.79
1.191+76.79
1.191
+
76.79
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39.42
−
20.27
\begin{array}{r}39.42 \\ -20.27 \\ \hline\end{array}
39.42
−
20.27
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Traci spent
1
3
\frac{1}{3}
3
1
hour eating breakfast and
1
6
\frac{1}{6}
6
1
hour helping clean up after breakfast. How much time did she spend in all?
\newline
Give your answer in simplest form.
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Solve for
x
x
x
:
\newline
4.4
=
x
−
5.6
4.4=x-5.6
4.4
=
x
−
5.6
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Find the mean:
1
,
3.5
,
2
,
9
,
0.3
1, 3.5, 2, 9, 0.3
1
,
3.5
,
2
,
9
,
0.3
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−
0.6
+
0.4
y
=
1.4
-0.6+0.4 y=1.4
−
0.6
+
0.4
y
=
1.4
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Find the mean:
1
,
3.5
,
2.9
,
0.3
1,3.5,2.9,0.3
1
,
3.5
,
2.9
,
0.3
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Convert rupees into paisa.
\newline
880.85
880.85
880.85
=
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Find the value of
x
x
x
in the equation below.
\newline
x
−
13.6
=
7.6
x-13.6=7.6
x
−
13.6
=
7.6
\newline
Answer:
x
=
x=
x
=
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Which expression is equivalent to
99.7
−
(
−
57.9
)
99.7-(-57.9)
99.7
−
(
−
57.9
)
?
\newline
99.7
−
57.9
99.7-57.9
99.7
−
57.9
\newline
57.9
−
99.7
57.9-99.7
57.9
−
99.7
\newline
−
57.9
−
99.7
-57.9-99.7
−
57.9
−
99.7
\newline
99.7
+
57.9
99.7+57.9
99.7
+
57.9
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