CHRONO

10 s.

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

CHRONO

0 s.
30 + 5000 + 700 =
1000 + 60 + 900 =
500 + 80 + 200 =
300 + 2000 + 90 =
90 + 5000 + 500 =
8000 + 8000 + 2000 =
2000 + 800 + 6000 =
500 + 40 + 500 =
9000 + 4000 + 40 =
700 + 2000 + 1000 =
30 + 4000 + 10 =
7000 + 100 + 200 =
3000 + 300 + 100 =
900 + 7000 + 1000 =
90 + 500 + 100 =
2000 + 3000 + 500 =
800 + 6000 + 400 =
5000 + 70 + 5000 =
40 + 30 + 3000 =
600 + 90 + 100 =