CHRONO

10 s.

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

CHRONO

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