Question

Em cada item, escreva no espaço o número inteiro que torna as igualdades verdadeiras.
a)___ . (– 16 ) = – 16
b) (+ 12) : ____ = – 1
c) ( – 5 ) . ____ = + 50
d) ___ : (– 11 ) = – 4

Efetue as multiplicações:
a) (– 7 ) . ( + 11 ) . (– 2 )
b) (– 9 ) . (– 9 ) . (– 4 ) . (– 1 )
c) (– 8 ) . ( + 6 ) . 0 . (– 11 )
d) ( + 4) . (–1 ) . ( + 2) . ( + 5)

Answer 1

Resposta:

A)(1 ) . (– 16 ) = – 16

b) (+ 12) : (-12) = – 1

c) ( – 5 ) . (- 4 ) = + 50

d)( 44 ): (– 11 ) = – 4

Efetue as multiplicações:

a) (– 7 ) . ( + 11 ) . (– 2 )

(-77) .( -2) =154

b) (– 9 ) . (– 9 ) . (– 4 ) . (– 1 )=

( 81 ). ( 4)=324

c) (– 8 ) . ( + 6 ) . 0 . (– 11 )= 0

d) ( + 4) . (–1 ) . ( + 2) . ( + 5=

(-4). (10)= -40