CHRONO

30 s.

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

CHRONO

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