Question

1) Efetue as multiplicações:

A) 3 x (-5) =

B) (-4) x 8 =

C) 4 x (-25) =

D) (-10) x 33 =

E) 20 x (-36) =

F) (-45) x 6 =

G) 111 x (-2) =

H) (-300) x 50 =

I) ( + 5 ) x ( + 3 )=

J) ( + 4 ) x ( – 5 )=

K) ( – 8 ) x ( + 4 )=

L) ( – 6 ) x ( – 7 )=

2) Efetue as divisões:

a)( + 15 ) : ( + 3 ) =

b)( + 20 ) : ( – 4 ) =

c) ( – 35 ) : ( + 7 ) =

d) ( – 40 ) : ( – 5) =

e) (+ 51 ) : ( – 3 ) =

f) ( – 77 ) : ( + 11 ) =

g) 500 : ( – 25 ) =

h) ( – 750 ) : 10 =

I) (-85) : 5 =

J) (+36) : (+9) =

K) (+55) : (-5) =

L) (-27) : (+3) =

M) (-40) : (-4) =

N) (-26) : (-26) =​

Answer 1

Resposta:

1) Efetue as multiplicações:

A) 3 x (-5) = -15

B) (-4) x 8 = -32

C) 4 x (-25) = -100

D) (-10) x 33 = -330

E) 20 x (-36) = -720

F) (-45) x 6 = -270

G) 111 x (-2) = -222

H) (-300) x 50 = -1500

I) ( + 5 ) x ( + 3 )= +15

J) ( + 4 ) x ( – 5 )= -20

K) ( – 8 ) x ( + 4 )= -32

L) ( – 6 ) x ( – 7 )= +42

2) Efetue as divisões:

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

b)( + 20 ) : ( – 4 ) = -5

c) ( – 35 ) : ( + 7 ) = -5

d) ( – 40 ) : ( – 5) = +8

e) (+ 51 ) : ( – 3 ) = -17

f) ( – 77 ) : ( + 11 ) = -7

g) 500 : ( – 25 ) = -20

h) ( – 750 ) : 10 = -75

I) (-85) : 5 = -17

J) (+36) : (+9) = +4

K) (+55) : (-5) = -11

L) (-27) : (+3) = -9

M) (-40) : (-4) = +10

N) (-26) : (-26) = +1