CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
230 = 228 +
620 = 617 +
620 = 618 +
670 = 666 +
730 = 726 +
360 = 359 +
780 = 773 +
30 = 29 +
910 = 905 +
950 = 941 +
640 = 636 +
440 = 439 +
550 = 546 +
50 = 46 +
170 = 166 +
640 = 633 +
340 = 338 +
860 = 858 +
120 = 118 +
530 = 525 +