CHRONO

10 s.

Calculer des produits par 2, 20, 200, 4, 40, 400.

CHRONO

0 s.
40 x 6 =
6 x 20 =
20 x 10 =
20 x 9 =
2 x 4 =
200 x 14 =
7 x 4 =
400 x 12 =
14 x 40 =
20 x 12 =
20 x 14 =
4 x 15 =
200 x 13 =
20 x 7 =
200 x 2 =
200 x 3 =
10 x 400 =
2 x 10 =
12 x 400 =
400 x 8 =