CHRONO

10 s.

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

CHRONO

0 s.
4 x 4 =
9 x 40 =
13 x 40 =
400 x 7 =
8 x 2 =
200 x 2 =
20 x 8 =
400 x 14 =
9 x 20 =
1 x 20 =
6 x 400 =
3 x 200 =
9 x 200 =
4 x 4 =
5 x 400 =
11 x 20 =
200 x 9 =
2 x 40 =
13 x 400 =
20 x 10 =