CHRONO

10 s.

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

CHRONO

0 s.
8 x 20 =
40 x 8 =
4 x 6 =
4 x 11 =
6 x 20 =
400 x 14 =
40 x 13 =
40 x 12 =
20 x 9 =
2 x 11 =
10 x 2 =
4 x 400 =
12 x 400 =
400 x 7 =
400 x 8 =
2 x 200 =
20 x 7 =
11 x 200 =
400 x 11 =
3 x 400 =