CHRONO

10 s.

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

CHRONO

0 s.
8 x 100 =
3 x 800 =
400 x 4 =
1 x 700 =
700 x 2 =
2 x 70 =
6 x 900 =
8 x 600 =
9 x 80 =
400 x 2 =
1 x 400 =
3 x 50 =
7 x 10 =
9 x 600 =
1 x 600 =
8 x 50 =
3 x 90 =
700 x 4 =
1 x 200 =
4 x 60 =