CHRONO

10 s.

Multiplier un nombre simple par 20 ou 50.

CHRONO

0 s.
20 x 1 =
8 x 50 =
60 = 3 x
20 x 5 =
160 = 8 x
300 = 50 x
3 x 20 =
50 = 1 x
300 = 6 x
250 = 50 x
50 x 6 =
50 x 8 =
120 = 20 x
400 = 8 x
5 x 20 =
40 = 2 x
180 = 20 x
50 x 7 =
20 x 8 =
7 x 20 =