CHRONO

10 s.

Multiplier un nombre simple par 20 ou 50.

CHRONO

0 s.
20 = 20 x
150 = 3 x
50 x 3 =
400 = 50 x
6 x 50 =
5 x 50 =
40 = 20 x
20 x 8 =
20 x 5 =
20 x 2 =
160 = 20 x
100 = 5 x
20 x 1 =
140 = 7 x
6 x 20 =
120 = 6 x
50 = 50 x
450 = 50 x
60 = 3 x
50 x 6 =