CHRONO

10 s.

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

CHRONO

0 s.
7 x 400 =
4 x 8 =
20 x 2 =
10 x 2 =
200 x 15 =
9 x 2 =
11 x 20 =
200 x 7 =
8 x 4 =
2 x 5 =
2 x 400 =
2 x 4 =
15 x 40 =
200 x 10 =
200 x 4 =
13 x 20 =
1 x 20 =
20 x 1 =
2 x 11 =
200 x 3 =