CHRONO

10 s.

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

CHRONO

0 s.
20 + 800 + 5000 =
9000 + 4000 + 700 =
200 + 50 + 30 =
800 + 100 + 50 =
100 + 3000 + 2000 =
7000 + 300 + 50 =
5000 + 8000 + 30 =
30 + 40 + 1000 =
30 + 800 + 5000 =
700 + 50 + 5000 =
100 + 4000 + 2000 =
1000 + 800 + 600 =
1000 + 90 + 600 =
5000 + 8000 + 20 =
10 + 900 + 80 =
90 + 5000 + 100 =
5000 + 70 + 20 =
400 + 2000 + 100 =
30 + 500 + 80 =
900 + 6000 + 100 =