CHRONO

10 s.

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

CHRONO

0 s.
2 x 14 =
20 x 9 =
12 x 4 =
400 x 4 =
5 x 4 =
4 x 4 =
1 x 40 =
20 x 6 =
2 x 7 =
6 x 20 =
400 x 11 =
8 x 40 =
20 x 15 =
4 x 5 =
15 x 400 =
3 x 400 =
7 x 40 =
200 x 6 =
40 x 4 =
20 x 13 =