CHRONO

10 s.

Calculer des produits du type 80 x 4 ou 800 x 4.

CHRONO

0 s.
1 x 600 =
4 x 20 =
900 x 8 =
9 x 50 =
5 x 20 =
4 x 10 =
9 x 800 =
5 x 600 =
3 x 600 =
80 x 7 =
100 x 3 =
800 x 8 =
1 x 20 =
600 x 4 =
90 x 2 =
800 x 7 =
50 x 7 =
8 x 20 =
2 x 30 =
900 x 1 =