Question

c)
(-5).(+3) =
d) (-5).(-3) =
e)
(+21): (+3) =
f) (+21): (-3) =
g) (-21): (+3) =
h)
(-21): -3) =
2) Calcule com atenção:
a)
(+7).(-5) =
b) (-9).(-8) =
c) (+10) . (+3) =
d) (+9). (-11) =
e) (-7). (+6) =
f) (+6) . (+11) =
g)
(-9). (+12).(-2) =
h)
(-7).(-10).(-5) =
(-7).(-7).(-1).(-5) =
i
)
(+20) - (-2) - (+6) . (+4) - (-1) =​

Answer 1

Resposta:

C) -15

d) +15

e) +7

f) -7

g) -7

h) +7

2)

a) -35

b) +73

c) +30

d) -99

e) -42

f) +66

g) +216

h) -350

i) -1