Question

01 – Calcule as multiplicações de números inteiros: A ) ( + 3 ) . ( + 5 ) = __________________. E ) – 7 . 0 = _______________________. B ) ( + 12 ) . ( - 3 ) = __________________. F ) ( + 6 ) . ( - 5 ) = __________________. C ) ( - 5 ) . ( - 11 ) = ___________________.G ) ( - 2 ) . ( - 8 ) = ___________________. D ) ( - 3 ) . ( + 8 ) = __________________ . H ) ( - 7 ) . ( + 6 ) = ___________________.

Answer 1

a) ( + 3 ) . ( + 5 ) = +15

b) ( + 12 ) . ( - 3 ) = -36

c) ( - 5 ) . ( - 11 ) = +55

d) ( - 3 ) . ( + 8 ) = -24

e) – 7 . 0 = 0

f) ( + 6 ) . ( - 5 ) = -30

g) ( - 2 ) . ( - 8 ) = +16

h) ( - 7 ) . ( + 6 ) = -42