CHRONO

10 s.

Calculer sur les multiples de 250.

CHRONO

0 s.
2000 - 1500 =
1250 = 1000 +
1500 - 750 =
25 x 30 =
1500 = 250 x
750 = 1750 -
1250 = 250 +
90 x 25 =
1250 - 500 =
1500 - 1250 =
1250 - 1000 =
500 - 250 =
2000 = 1250 +
1750 - 1500 =
25 x 40 =
70 x 25 =
1750 - 1000 =
30 x 25 =
2000 = 1000 +
60 x 25 =