CHRONO

268 s.

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

CHRONO

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