Question

Calcule:
a) (-4) + (+38)
b) (-25) + (+25)
c) (-715) + (+82)
d) (-34) - (-12)
e) -23+ 37
f) -43+82
g) -53+ 79- 18- 7+ 15- 39+18

Answer 1

a) (-4) + (+38) = 34
b) (-25) + (+25) = 0
c) (-715) + (+82) = -633
d) (-34) - (-12) =  -22
e) -23+ 37 = 14
f) -43+82 = 39
g) -53+ 79- 18- 7+ 15- 39+18 = -5

Answer 2

Calcule:
a) (- 4) + (+ 38) =
- 4 + 38 = 
34
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b) (- 25) + (+ 25) =
- 25 + 25 =
0
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c) (- 715) + (+ 82) =
- 715 + 82 =
- 633
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d) (- 34) - (- 12) =
- 34 + 12 =
- 22
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e) - 23 + 37 =
14
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f) - 43 + 82 =
39
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g) - 53 + 79 - 18 - 7 + 15 - 39 + 18 =
26 - 18 - 7 + 15 - 39 + 18 =
8 - 7 + 15 - 39 + 18 =
1 + 15 - 39 + 18 =
16 - 39 + 18 =
- 23 + 18 =
- 5