Question

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)

Answer 1

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