CHRONO

10 s.

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

CHRONO

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