CHRONO

-INF s.

Calculs sur les dizaines ou des centaines entières.

CHRONO

0 s.
600 = 300 +
100 + 100 =
200 + 600 =
200 + 300 =
60 - 30 =
30 = 20 +
800 = 400 +
80 - 30 =
90 - 90 =
10 - 10 =
70 + 20 =
100 + 400 =
200 + 500 =
40 + 10 =
700 = 400 +
400 + 500 =
500 + 400 =
60 - 60 =
400 + 100 =
90 = 90 +