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Amandy0
@Amandy0
December 2019
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Calcule:
a) 6 - (-2)
b) 5 - (+1)
c) 9 - (+9)
d) -7 - (-5)
e) -9 - (++1)
f) 89 - (-11)
g) 2,4 - (-3)
h) -0,5 - (-0,5)
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gabivicky26
A) 6 - (-2) =
6 + 2
= 8
b) 5 - (+1) =
5 - 1
= 4
c) 9 - (+9) =
9 - 9
= 0
d) - 7 - (-5) =
- 7 + 5
= - 2
e) - 9 - (+1) =
- 9 - 1
= - 10
f) 89 - (-11) =
89 + 11
= 100
g) 2,4 - (-3) =
2,4 + 3
= 5,4
h) - 0,5 - (-0,5) =
- 0,5 + 0,5
= 0
Regra de Sinais:
+ + = +
- - = +
+ - = -
- + = -
0 votes
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6 + 2
= 8
b) 5 - (+1) =
5 - 1
= 4
c) 9 - (+9) =
9 - 9
= 0
d) - 7 - (-5) =
- 7 + 5
= - 2
e) - 9 - (+1) =
- 9 - 1
= - 10
f) 89 - (-11) =
89 + 11
= 100
g) 2,4 - (-3) =
2,4 + 3
= 5,4
h) - 0,5 - (-0,5) =
- 0,5 + 0,5
= 0
Regra de Sinais:
+ + = +
- - = +
+ - = -
- + = -