CHRONO

-INF s.

Calculs sur les dizaines ou des centaines entières.

CHRONO

0 s.
500 + 100 =
80 - 50 =
90 = 40 +
100 + 200 =
40 + 20 =
30 + 20 =
400 - 300 =
10 + 70 =
300 + 200 =
700 - 100 =
500 + 300 =
700 + 100 =
600 = 100 +
80 = 10 +
20 - 20 =
800 = 100 +
400 + 500 =
900 = 100 +
50 - 20 =
50 - 50 =