CHRONO

10 s.

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

CHRONO

0 s.
50 x 1 =
2 x 900 =
6 x 100 =
200 x 7 =
1 x 600 =
500 x 9 =
5 x 400 =
3 x 70 =
5 x 90 =
700 x 5 =
400 x 9 =
5 x 800 =
20 x 2 =
900 x 9 =
800 x 9 =
90 x 9 =
7 x 70 =
6 x 400 =
30 x 3 =
6 x 600 =