CHRONO

10 s.

Calculs sur les dizaines.

CHRONO

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