Question

Efetue as multiplicações:
a)(-8) . (-9)=
b(-3) . (-6)=
c)(+4) . (+7)=
d)(+5) . (-9)=
e)(- 7) . (+7)=

Efetue as divisões:
a)(-90) : ( -10)=
b)(-45) : ( -5)=
c)(+42) : ( +6 )=
d)(- 56) : ( +7)=
e)(+24) : ( -3)=

Answer 1

Resposta:

a)(+8).(+25).(-2)=+8.+25.-2=+200.-2=-400

b)(-18).(-5).(+3)=-18.-5.+3=-90.+3=-270

c)(+8).(-5)=+8.-5=-40

d)(-36)÷(+4)=-36.+4=-9

e)(-99)÷(-9)=-99.-9=-11

f)(+60)÷(-10)=+60÷-10=-6