CHRONO

-INF s.

Calculs sur les dizaines ou des centaines entières.

CHRONO

0 s.
70 + 10 =
200 + 300 =
40 + 20 =
50 + 40 =
70 + 20 =
800 = 100 +
300 + 300 =
90 = 70 +
40 - 20 =
80 = 10 +
40 + 30 =
90 - 60 =
90 - 30 =
20 + 10 =
600 = 600 +
10 + 20 =
40 = 20 +
200 + 700 =
90 = 90 +
700 - 300 =