CHRONO

10 s.

Calculs sur les dizaines ou des centaines entières.

CHRONO

0 s.
100 + 400 =
70 + 10 =
70 - 20 =
200 + 300 =
80 = 30 +
800 = 800 +
20 + 70 =
30 + 40 =
60 = 10 +
40 + 30 =
70 = 10 +
200 - 100 =
40 + 10 =
800 - 800 =
10 + 80 =
400 + 400 =
200 + 400 =
70 + 20 =
300 + 400 =
50 + 30 =