CHRONO

10 s.

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

CHRONO

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