CHRONO

10 s.

Réaliser des calculs du type 1000-400, 1000-430.

CHRONO

0 s.
1000 - 410 =
1000 - 340 =
1000 - 910 =
1000 - 640 =
1000 - 870 =
1000 - 930 =
1000 - 960 =
1000 - 280 =
1000 - 920 =
1000 - 250 =
1000 - 230 =
1000 - 440 =
1000 - 970 =
1000 - 330 =
1000 - 130 =
1000 - 580 =
1000 - 820 =
1000 - 310 =
1000 - 460 =
1000 - 880 =