CHRONO

15 s.

Additions du type 30 + 40, 20 + 50.

CHRONO

0 s.
50 + 10 =
60 + 10 =
10 + 70 =
10 + 80 =
10 + 50 =
30 + 30 =
10 + 40 =
10 + 60 =
20 + 20 =
10 + 20 =
50 + 30 =
40 + 20 =
50 + 40 =
30 + 40 =
50 + 20 =
10 + 10 =
70 + 20 =
50 + 20 =
80 + 10 =
40 + 50 =