Question

5) Calcule o valor das expressões:
a) 5/6 - 1/4 +2/3 =

b) 8 + 1/3 - 3/4 =

6) Quanto é?
a) 5/9 . 7/8 =
b) 3/5 : 3/4 =

7) Calcule correta:
a) 4/5 : 2/3 =
b) 5 : 2/3 =

Answer 1

5) Calcule o valor das expressões:
a) 5/6 - 1/4 +2/3 = 10/12 - 3/12 + 8/12 = 15/12
b) 8 + 1/3 - 3/4 = 96/12 + 4/12 - 9/12 = 91/12

6) Quanto é? 
a) 5/9 . 7/8 = 35/71
b) 3/5 : 3/4 =  15/12

7) Calcule correta:
a) 4/5 : 2/3 = 12/10
b) 5 : 2/3 =    15/2