CHRONO

10 s.

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

CHRONO

0 s.
20 x 5 =
600 x 4 =
4 x 600 =
30 x 1 =
8 x 600 =
8 x 700 =
6 x 300 =
4 x 20 =
10 x 5 =
3 x 50 =
90 x 6 =
2 x 70 =
6 x 700 =
300 x 3 =
8 x 30 =
90 x 1 =
1 x 80 =
7 x 400 =
7 x 40 =
6 x 800 =