CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
550 = 543 +
460 = 451 +
420 = 416 +
260 = 256 +
910 = 910 +
340 = 336 +
540 = 534 +
930 = 921 +
810 = 808 +
1000 = 995 +
40 = 34 +
870 = 865 +
890 = 881 +
830 = 823 +
410 = 406 +
770 = 762 +
510 = 506 +
280 = 276 +
880 = 875 +
600 = 593 +