CHRONO

10 s.

Calculer sur des nombres entiers de dizaines, de centaines ou de milliers.

CHRONO

0 s.
600 + 7000 + 4000 =
600 + 500 + 9000 =
400 + 200 + 7000 =
8000 + 100 + 5000 =
7000 + 100 + 100 =
40 + 60 + 50 =
10 + 700 + 6000 =
7000 + 10 + 5000 =
200 + 200 + 40 =
2000 + 3000 + 90 =
800 + 100 + 500 =
2000 + 1000 + 50 =
10 + 1000 + 60 =
50 + 800 + 600 =
200 + 200 + 50 =
90 + 50 + 20 =
10 + 30 + 80 =
3000 + 40 + 40 =
5000 + 70 + 30 =
600 + 80 + 500 =