CHRONO

2 s.

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

CHRONO

0 s.
2 x 40 =
4 x 10 =
40 x 9 =
200 x 3 =
20 x 10 =
2 x 2 =
9 x 20 =
20 x 4 =
40 x 15 =
400 x 1 =
4 x 4 =
1 x 400 =
40 x 8 =
400 x 2 =
9 x 400 =
6 x 2 =
2 x 13 =
11 x 20 =
40 x 13 =
400 x 7 =