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Let’s check out your problem:
Add.
\newline
−
9
+
3
10
=
-9 + \frac{3}{10} =
−
9
+
10
3
=
_____
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Math Problems
Grade 7
Add and subtract rational numbers
Full solution
Q.
Add.
\newline
−
9
+
3
10
=
-9 + \frac{3}{10} =
−
9
+
10
3
=
_____
Convert to fraction:
Convert
−
9
-9
−
9
to a
fraction
with the same denominator as
3
10
\frac{3}{10}
10
3
for easy addition.
\newline
−
9
=
−
9
1
=
−
90
10
-9 = \frac{-9}{1} = \frac{-90}{10}
−
9
=
1
−
9
=
10
−
90
Add fractions:
Add the
fractions
−
90
10
-\frac{90}{10}
−
10
90
and
3
10
\frac{3}{10}
10
3
.
−
90
10
+
3
10
=
−
90
+
3
10
=
−
87
10
\ -\frac{90}{10} + \frac{3}{10} = \frac{-90 + 3}{10} = -\frac{87}{10}
−
10
90
+
10
3
=
10
−
90
+
3
=
−
10
87
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\newline
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\newline
−
6
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n
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−
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\newline
Answer:
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\newline
Choose
1
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\newline
(A) The team selects the
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\newline
(Round the answer to the nearest whole number.)
\newline
□
\square
□
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Question
Multiply:
\newline
−
0.1
×
−
2
5
=
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−
0.1
×
5
−
2
=
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