CÁLCULO MENTAL: DIVIDE MENTALMENTE

12 : 2 = 21 : 3 = 24 : 4 = 35 : 5 =
10 : 2 = 24 : 3 = 16 : 4 = 40 : 5 =
16 : 2 = 12 : 3 = 32 : 4 = 25 : 5 =
14 : 2 = 27 : 3 = 20 : 4 = 30 : 5 =
18 : 2 = 15 : 3 = 28 : 4 = 10 : 5 =
8 : 2 = 18 : 3 = 36 : 4 = 45 : 5 =