CHRONO

-INF s.

Multiplier un nombre simple par 20 ou 50.

CHRONO

0 s.
400 = 8 x
150 = 3 x
9 x 20 =
120 = 6 x
20 x 4 =
350 = 50 x
140 = 7 x
4 x 20 =
100 = 5 x
50 x 5 =
3 x 20 =
50 x 3 =
450 = 9 x
2 x 50 =
4 x 50 =
3 x 50 =
80 = 20 x
50 x 9 =
250 = 5 x
20 x 9 =