CHRONO

10 s.

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

CHRONO

0 s.
3000 + 800 + 3000 =
5000 + 200 + 300 =
3000 + 900 + 500 =
90 + 5000 + 10 =
7000 + 900 + 100 =
3000 + 60 + 20 =
500 + 500 + 700 =
600 + 700 + 20 =
600 + 600 + 800 =
9000 + 10 + 800 =
1000 + 3000 + 200 =
8000 + 800 + 200 =
30 + 1000 + 10 =
80 + 20 + 90 =
60 + 100 + 5000 =
20 + 60 + 90 =
100 + 400 + 500 =
200 + 70 + 7000 =
300 + 70 + 80 =
500 + 8000 + 400 =