CHRONO

10 s.

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

CHRONO

0 s.
700 x 9 =
10 x 5 =
9 x 500 =
8 x 300 =
9 x 800 =
6 x 80 =
3 x 900 =
7 x 30 =
2 x 800 =
700 x 6 =
9 x 700 =
3 x 400 =
5 x 100 =
20 x 4 =
3 x 600 =
5 x 900 =
90 x 7 =
400 x 3 =
4 x 500 =
60 x 3 =