CHRONO

10 s.

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

CHRONO

0 s.
5 x 500 =
7 x 800 =
1 x 500 =
70 x 2 =
8 x 600 =
1 x 10 =
600 x 9 =
80 x 3 =
2 x 50 =
8 x 100 =
4 x 500 =
600 x 7 =
100 x 8 =
500 x 1 =
400 x 4 =
50 x 6 =
4 x 70 =
8 x 500 =
2 x 700 =
300 x 5 =