CHRONO

10 s.

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

CHRONO

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