CHRONO

10 s.

Calculs sur les dizaines ou des centaines entières.

CHRONO

0 s.
100 + 100 =
500 + 200 =
80 = 10 +
300 + 100 =
100 + 600 =
400 - 400 =
400 + 500 =
40 + 50 =
40 + 20 =
60 + 20 =
200 + 200 =
800 = 600 +
90 - 70 =
80 - 60 =
900 - 100 =
400 + 100 =
100 - 100 =
900 = 600 +
10 + 40 =
300 = 100 +