CÁLCULO MENTAL 2.º - NIVEL 6

Calcula mentalmente :
30 + 68 = ____________________
24 + 50 = ____________________
80 + 17 = ____________________
36 + 40 = ____________________
20 + 52 = ____________________
60 + 29 = ____________________

Calcula mentalmente :
23 + 70 = ____________________
10 + 77 = ____________________
35 + 50 = ____________________
32 - 20 = ____________________
73 - 50 = ____________________
86 - 40 = ____________________

Calcula mentalmente :
65 - 30 = ____________________
52 - 10 = ____________________
94 - 60 = ____________________
41 - 40 = ____________________
68 - 50 = ____________________
55 - 20 = ____________________