CHRONO

41 s.

Calculs sur les dizaines ou des centaines entières.

CHRONO

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