CHRONO

10 s.

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

CHRONO

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