CHRONO

10 s.

Multiplier un nombre simple par 20 ou 50.

CHRONO

0 s.
50 x 6 =
140 = 20 x
160 = 20 x
50 x 8 =
20 x 1 =
50 = 1 x
7 x 20 =
250 = 50 x
100 = 20 x
50 = 50 x
400 = 50 x
20 = 20 x
20 x 4 =
200 = 4 x
20 x 6 =
40 = 2 x
400 = 8 x
20 x 7 =
20 x 2 =
120 = 20 x