CHRONO

10 s.

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

CHRONO

0 s.
14 x 4 =
6 x 20 =
2 x 200 =
200 x 4 =
400 x 5 =
14 x 400 =
6 x 400 =
9 x 200 =
40 x 15 =
9 x 2 =
2 x 6 =
200 x 8 =
11 x 200 =
40 x 13 =
4 x 3 =
5 x 200 =
15 x 200 =
400 x 2 =
5 x 40 =
14 x 200 =