CHRONO

-INF s.

Calculs sur les dizaines ou des centaines entières.

CHRONO

0 s.
500 = 100 +
90 - 30 =
70 = 70 +
40 - 30 =
60 - 50 =
800 - 200 =
90 - 10 =
70 + 10 =
500 = 500 +
600 - 500 =
60 - 60 =
40 = 10 +
200 + 700 =
50 + 40 =
600 + 100 =
300 + 100 =
200 + 400 =
90 = 90 +
50 = 50 +
40 - 40 =