CHRONO

10 s.

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

CHRONO

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