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Math Problems
Grade 7
Add and subtract rational numbers
w
=
3.1
+
l
2
w = 3.1 + \frac{l}{2}
w
=
3.1
+
2
l
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Add.
\newline
3
10
+
7
10
=
\frac{3}{10} + \frac{7}{10} =
10
3
+
10
7
=
_____
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Add.
\newline
3
4
+
1
2
=
\frac{3}{4} + \frac{1}{2} =
4
3
+
2
1
=
_____
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Add.
\newline
1
4
+
1
2
=
\frac{1}{4} + \frac{1}{2} =
4
1
+
2
1
=
_____
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Subtract.
\newline
1
4
−
1
2
=
\frac{1}{4} - \frac{1}{2} =
4
1
−
2
1
=
_____
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Subtract.
\newline
3
4
−
1
2
=
\frac{3}{4} - \frac{1}{2} =
4
3
−
2
1
=
_____
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Subtract.
\newline
1
4
−
3
4
=
\frac{1}{4} - \frac{3}{4} =
4
1
−
4
3
=
_____
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2
+
2
+
4
+
9
8
2+2+4+\frac{9}{8}
2
+
2
+
4
+
8
9
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5
2
3
−
1
1
2
=
n
5\frac{2}{3} - 1\frac{1}{2} = n
5
3
2
−
1
2
1
=
n
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Tammy makes
1.4
1.4
1.4
gallons of tea. If she pours
3
8
\frac{3}{8}
8
3
of the tea in a glass, how many gallons tea are in the glass?
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\newline
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\newline
Apr
23
23
23
\newline
11
11
11
:
15
15
15
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m
4
=
1
2
\frac{m}{4} = \frac{1}{2}
4
m
=
2
1
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3
4
=
1
3
p
−
1
\frac{3}{4}=\frac{1}{3}p-1
4
3
=
3
1
p
−
1
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2
2
+
4
\frac{2}{2} + 4
2
2
+
4
=
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2
2
2
.
1.2
+
3
=
1.2+3=
1.2
+
3
=
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y
=
−
3
4
x
+
1
y=-\frac{3}{4} x+1
y
=
−
4
3
x
+
1
\newline
\begin{tabular}{|l|l|}
\newline
\hline
x
x
x
&
y
y
y
\\
\newline
\hline
−
4
-4
−
4
& \\
\newline
\hline
0
0
0
& \\
\newline
\hline
4
4
4
& \\
\newline
\hline
\newline
\end{tabular}
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2
+
2
=
?
2+2=?
2
+
2
=
?
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(
2
x
+
1
)
5
=
x
+
1
(2x+1)5=x+1
(
2
x
+
1
)
5
=
x
+
1
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3
3
3
ones
2
2
2
te ths =? Hundreths
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0
,
2
+
3
x
−
2
=
0
0,2+3 x-2=0
0
,
2
+
3
x
−
2
=
0
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1
+
5
+
7
×
1+ 5+ 7 \times
1
+
5
+
7
×
8
9
\frac {8}{9}
9
8
=
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2
+
2
+
2
2
2+2+\frac{2}{2}
2
+
2
+
2
2
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Section
2
2
2
.
1
1
1
\newline
Question
10
10
10
,
2
2
2
.
1
1
1
.
71
71
71
\newline
Solve the equation using the multiplication property
\newline
2
15
=
−
y
5
\frac{2}{15} = -\frac{y}{5}
15
2
=
−
5
y
\newline
The solution set is
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8
+
2.7
=
8+2.7=
8
+
2.7
=
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x
x
+
3
=
x
+
2
x
+
6.2
\frac{x}{x+3} = \frac{x+2}{x+6.2}
x
+
3
x
=
x
+
6.2
x
+
2
Find `x`
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