Question

Calculem a conta por favor. é pra entregar hj
como resolve
1) a)(-8)+(-1)+(-2)

b)(-9)+(-4)+(-3)

c)(-10)+(-20)+(-30)

2) Calcule as adições

a)(+8)+(-5)=

b)(+15)+(-3)=

c)(+10)+(-4)=

d)(-12)+(+20)=

e)(-30)+(+10)=

f)(+1)+(-8)=

g)(+3)+(-10)+

h)(-4)+(+1)=

i)(-8)+(+5)=

j)(-3)+(+3)=

3) Efetue estas adições

a)(+8)+(-3)+(+7)=

b)(+1)+(-4)+(+10)=

c)(+2)+(-9)+(-8)=

d)(-5)+(-2)+(+3)=

e)(-12)+(-9)+(+1)=

f)(-8)+(+10)+(-15)+(-20)=

4) efetue as subtrações
a)(+3)-(+5)=

b)(+10)-(-9)=

c)(-5)-(+8)=

d)(+10)-(-20)=

e)(+18)-(+15)=

f)(-1)-(-2)=

Answer 1

Resposta:

1)a)-8-1-2=-11

b)-9-4-3=-16

c)-10-20-30= -60

2)a)8-5=3

b)15-3=12

c)10-4=6

d)-12+20=8

e)-30+10= -20

f)1-8=-7

g)3-10= -7

h)-4+1= -3

i)-8+5=- 3

j)-3+3=0

3)a)8-3+7=12

b)1-4+10=7

c)2-9-8= -15

d)-5-2+3= -4

e)-12-9+1=-20

f)-8+10-15-20= -33

4)a)3-5= -2

b)10+9=19

c)-5-8= -13

d)10+20=30

e)18-15=3

f)-1+2=1