1-CALCULE
A)+(-3+8)=
B)-(-3+8)=
C)+(5-6)=
D)-(-3-1)=
E)-(-6+4-1)=
F)+(-3-2-1)=
G)-(-6+8)=
2 CALCULE
A) +5+(7-3)
B) 8-(-2-1)
C) -6-(-3+2)
D) 18-(-5-2-3)
E) 30-(6-1+7)
F) 4+(-5+0+8-4)
G) 4+(3-5)+(-2-6)
H) 8-(3+5-20)+(3-10)
A)+(-3+8)=
B)-(-3+8)=
C)+(5-6)=
D)-(-3-1)=
E)-(-6+4-1)=
F)+(-3-2-1)=
G)-(-6+8)=
2 CALCULE
A) +5+(7-3)
B) 8-(-2-1)
C) -6-(-3+2)
D) 18-(-5-2-3)
E) 30-(6-1+7)
F) 4+(-5+0+8-4)
G) 4+(3-5)+(-2-6)
H) 8-(3+5-20)+(3-10)
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Explicação passo-a-passo:
1) a) +(+5)= +5
b) - (+5)= -5
c) +(-1)= -1
d) -(-4)= +4
e) -( -7+4)= - ( -3)= +3
f) +( -6)= -6
g) - (+2)= -2
2) a) 5+(+4)=5+4=9
b) 8-(-3)= 8+3= 11
c) -6 - ( -1)= -6 +1= -5
d) 18 - ( -10)= 18 +10= 28
e) 30- ( 13-1)= 30 - (+12)= 30-12= 18
f) 4+ ( -9+8)= 4+ (-1)= 4-1= +3
g) 4+( -2) +(-8)= 4 -2 -8= 4 -10= -6
h) 8 - (8-20) +(-7)= 8 - ( -12) -7= 8+12 -7= 20-7= +13