a) (+2)+(-2)+(+2)
b) (+1)+(-15)+(+7)
c) (+7)+(+14)+(-7)
d) (+30)+(-18)+(-6)
e) (-52,1)+(-1,83)+(-5)
f) (+60)+(-23)+(+7)
g) (+3,8)+(+15)+(-5,3)
h) (+3)+(-18)+(+12)
Respostas
respondido por:
2
a) 2
b) 7
c) 14
D) 6
E) -58,93
f) 44
g) 13,5
h) -3
b) 7
c) 14
D) 6
E) -58,93
f) 44
g) 13,5
h) -3
respondido por:
1
A)
= (+2)+(-2)+(+2)
= 2 - 2 + 2
= 0 + 2
= 2
**************************
b)
= (+1) + (-15) + (+7)
= 1 - 15 + 7
= - 14 + 7
= - 7
******************************
c)
= (+7) + (+14) + (-7)
= 7 + 14 - 7
= 21 - 7
= 14
******************************
d)
= (+30) + (-18) + (-6)
= 30 - 18 - 6
= 30 - 24
= 6
********************************
e)
= ( -52,1) + (-1,83) + (-5)
= - 52,10 - 1,83 - 5
= - 52,10 - 6,83
= - 58,93
****************************
f)
= (+60) + (- 23) + (+7)
= 60 - 23 + 7
= 60 - 16
= 44
*********************************
g)
= (+3,8) + (+ 15) + (- 5,3)
= 3,8 + 15,0 - 5,3
= 18,8 - 5,3
= 13,5
********************************
h)
= (+ 3) + (-18) + (+ 12)
= 3 - 18 + 12
= 3 + 12 - 18
= 15 - 18
= - 3
= (+2)+(-2)+(+2)
= 2 - 2 + 2
= 0 + 2
= 2
**************************
b)
= (+1) + (-15) + (+7)
= 1 - 15 + 7
= - 14 + 7
= - 7
******************************
c)
= (+7) + (+14) + (-7)
= 7 + 14 - 7
= 21 - 7
= 14
******************************
d)
= (+30) + (-18) + (-6)
= 30 - 18 - 6
= 30 - 24
= 6
********************************
e)
= ( -52,1) + (-1,83) + (-5)
= - 52,10 - 1,83 - 5
= - 52,10 - 6,83
= - 58,93
****************************
f)
= (+60) + (- 23) + (+7)
= 60 - 23 + 7
= 60 - 16
= 44
*********************************
g)
= (+3,8) + (+ 15) + (- 5,3)
= 3,8 + 15,0 - 5,3
= 18,8 - 5,3
= 13,5
********************************
h)
= (+ 3) + (-18) + (+ 12)
= 3 - 18 + 12
= 3 + 12 - 18
= 15 - 18
= - 3
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