CHRONO

54 s.

Ajouter ou soustraire des dizaines entières et compléments.

CHRONO

0 s.
70 + 14 =
10 + 51 =
46 - 20 =
60 + 48 =
70 + 11 =
79 = 70 +
44 = 20 +
44 + 30 =
75 + 30 =
99 = 50 +
46 = 40 +
65 - 40 =
77 = 60 +
73 = 40 +
89 = 60 +
60 + 45 =
72 = 10 +
21 + 20 =
36 + 60 =
82 = 20 +