CHRONO

10 s.

Ajouter ou soustraire des dizaines entières et compléments.

CHRONO

0 s.
30 + 33 =
32 + 40 =
10 + 36 =
50 + 55 =
40 + 62 =
69 = 20 +
28 + 50 =
60 + 47 =
82 - 70 =
54 = 10 +
93 = 50 +
14 + 50 =
10 + 53 =
48 = 10 +
11 + 80 =
73 = 10 +
11 - 10 =
10 + 92 =
39 - 20 =
89 - 30 =