CHRONO

27 s.

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

CHRONO

0 s.
7 x 900 =
200 x 9 =
2 x 800 =
8 x 700 =
900 x 5 =
6 x 20 =
5 x 300 =
60 x 6 =
800 x 3 =
6 x 200 =
500 x 6 =
9 x 400 =
1 x 10 =
1 x 900 =
300 x 3 =
700 x 2 =
100 x 5 =
90 x 9 =
4 x 50 =
20 x 9 =