CHRONO

30 s.

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

CHRONO

0 s.
400 x 8 =
40 x 9 =
20 x 11 =
4 x 14 =
40 x 11 =
4 x 6 =
2 x 7 =
10 x 200 =
1 x 4 =
2 x 10 =
4 x 3 =
20 x 12 =
2 x 3 =
200 x 10 =
200 x 9 =
400 x 6 =
1 x 400 =
8 x 2 =
13 x 4 =
13 x 40 =