CHRONO

30 s.

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

CHRONO

0 s.
4 x 2 =
10 x 2 =
2 x 8 =
6 x 2 =
4 x 12 =
11 x 200 =
400 x 5 =
8 x 40 =
20 x 11 =
14 x 4 =
40 x 12 =
11 x 400 =
8 x 20 =
4 x 5 =
400 x 2 =
4 x 4 =
7 x 200 =
400 x 7 =
5 x 40 =
40 x 13 =