CHRONO

17 s.

Additions du type 50 + 70, 20 + 90.

CHRONO

0 s.
70 + 90 =
20 + 50 =
10 + 20 =
40 + 40 =
30 + 20 =
10 + 50 =
20 + 90 =
80 + 30 =
30 + 10 =
60 + 90 =
40 + 20 =
80 + 10 =
60 + 70 =
40 + 60 =
50 + 40 =
50 + 50 =
80 + 20 =
10 + 80 =
80 + 60 =
90 + 90 =