CHRONO

10 s.

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

CHRONO

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