CHRONO

53 s.

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

CHRONO

0 s.
2 x 900 =
10 x 5 =
40 x 9 =
6 x 60 =
8 x 400 =
7 x 800 =
5 x 300 =
20 x 8 =
700 x 7 =
2 x 500 =
100 x 2 =
30 x 7 =
8 x 70 =
500 x 1 =
6 x 20 =
50 x 8 =
6 x 400 =
40 x 2 =
200 x 7 =
4 x 900 =