Question

calcule as divisões
a)(+12):(-6)
b)(-8):(-4)
c)(+120):(+12)
d)(-25):(-5)
e)(+48:(-6)
f)(-200):(-10)​

Answer 1

Regra de sinal :  

( - ) ( - ) = +  

( + ) ( + ) = +  

( - ) ( + ) = -  

( + ) ( - ) = -

→ Cálculo :

A) ( + 12 ) ÷ ( - 6 ) =

- ( 12 ÷ 6 ) =

-2

B) ( - 8 ) ÷ ( - 4 ) =

+ ( 8 ÷ 4 ) =

+2

C) ( + 120 ) ÷ ( + 12 ) =

+ ( 120 ÷ 12 ) =

+10

D) ( - 25 ) ÷ ( - 5 ) =

+ ( 25 ÷ 5 ) =

+5

E) ( + 48 ) ÷ ( - 6 ) =

- ( 48 ÷ 6 ) =

-8

F) ( - 200 ) ÷ ( - 10 )​ =

- ( 200 ÷ 10 ) =

-20