Question

PROVA POR FAVOR ME AJUDEM!!!

Calcule 2/5 +3/5 *
1 ponto
a) 5/10
b) 1
c) 6/25
d) 5/25


2) Calcule e marque a alternativa 10 - (-3+7-1) *
1 ponto
a) 7
b) 5
c) 6
d) -6


3) Calcule: 2/4 : 3/5 x 6/5 *
1 ponto
a) 36
b) 36/80
c) 10/12
d) 1​

Answer 1

1)B; 2)A; 3)D

So seguir as regras basicas