CHRONO

10 s.

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

CHRONO

0 s.
500 x 4 =
40 x 3 =
400 x 3 =
40 x 2 =
3 x 70 =
800 x 2 =
60 x 1 =
70 x 8 =
200 x 4 =
800 x 1 =
6 x 60 =
5 x 600 =
900 x 2 =
400 x 5 =
60 x 6 =
4 x 400 =
4 x 200 =
2 x 700 =
300 x 4 =
6 x 900 =