Question

Efetue:
a) (+5) ∙ (+ 3) =
b) (+ 15) ÷ (−4 + 1)=
c) (+ 4) ∙ (– 5) =
d) (+ 20) ÷ (– 3 − 2)=
e) (– 8) ∙ (+ 4) =
f) (– 35) ÷ (+ 7) =
g) (– 6) ∙ (– 7) =
h) (– 40) ÷ (– 5) =
i) (– 2) ∙ (+4) ∙ (+3) ∙ (– 1) =
j) (+ 51) ÷ (– 2 − 1) =
k) (– 5) ∙ (– 6) ∙ (– 2) =
l) (− 3). (−15): (−1 − 2) =

Answer 1

Resposta:

a 15

b -5

c -20

d -4

e -32

f -5

g 42

h 8

i 24

j -17

k -60

l -15