Question

efetue as multiplicações
a) (+5) · (+3)
b)(+4) · (-5)
c)(-8)·(+4)
d)(-6)·(-7)
e)(-2)·4·(+3)·(-1)
f)(-5)·(-6)·(-2)
g)(+2)·(-3)·(-1)
h)(-3)·5·(-7)

Answer 1

Oie, Td Bom?!

a)

5 × 3 = 15

b)

4 × (- 5) = - (4 × 5) = - 20

c)

(- 8) × 4 = - (8 × 4) = - 32

d)

(- 6) × (- 7) = 6 × 7 = 42

e)

(- 2) × 4 × 3 × (- 1) = 2 × 4 × 3 × 1 = 8 × 3 = 24

f)

(- 5) × (- 6) × (- 2) = - (5 × 6 × 2) = - (10 × 6) = - 60

g)

2 × (- 3) × (- 1) = 2 × 3 × 1 = 2 × 3 = 6

h)

(- 3) × 5 × (- 7) = 3 × 5 × 7 = 15 × 7 = 105

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