CHRONO

10 s.

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

CHRONO

0 s.
7 x 100 =
200 x 8 =
3 x 100 =
9 x 10 =
500 x 3 =
80 x 6 =
6 x 700 =
8 x 800 =
90 x 4 =
3 x 800 =
10 x 7 =
3 x 20 =
5 x 200 =
50 x 1 =
900 x 9 =
900 x 6 =
900 x 3 =
700 x 3 =
90 x 8 =
8 x 300 =