Question

a) (+ 12 ) + ( +21) =
b)( + 13 ) + ( + 7) =
c)( +23 ) + ( +21) =
d) (- 12) + (-11)=
e) (-23) + (-4)=
f) (-21 ) + (-12)=
g) (+ 10 ) + (-13)
h)(+21)+(-23)=
i) ( + 40 ) + (-17)=
j) ( + 3) + (-2) + (-5)=
k) (-2)-(+1)-(+5)=
1) ( + 4) + (-2)-(+3)=
m) (+5)-(-3)-(-1 )=
n) (+4) + (-6)-(+7)-(-6)+(+7)
o)(-3)-(-5)+(-6) + ( +8)-(-4)​

Answer 1

Resposta:

a) (+ 12 ) + ( +21) = 12+21= 33

b)( + 13 ) + ( + 7) = 13+7= 20

c)( +23 ) + ( +21) = 23+21= 44

d) (- 12) + (-11)= -12-11= -23

e) (-23) + (-4)= -23-12= -35

f) (-21 ) + (-12)= -21-12= -33

g) (+ 10 ) + (-13)= 10-13= -3

h)(+21)+(-23)= 21-23= -2

i) ( + 40 ) + (-17)= 40-17= 23

j) ( + 3) + (-2) + (-5)= 3-2+5= 1+5= 6

k) (-2)-(+1)-(+5)= -2-1+5= -3+5= 2

1) ( + 4) + (-2)-(+3)= 4-2-3= 2-3= -1

m) (+5)-(-3)-(-1 )= 5+3+1= 8+1= 9

n) (+4) + (-6)-(+7)-(-6)+(+7)= 4-6-7+6+7= -2-7+6+7= -9+6+7= -3+7= 4

o)(-3)-(-5)+(-6) + ( +8)-(-4)= -3+5-6+8+4= 2-6+8+4= -4+8+4= 4+4= 8