CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
710 = 707 +
490 = 485 +
800 = 793 +
130 = 127 +
360 = 351 +
30 = 22 +
660 = 659 +
560 = 556 +
640 = 638 +
150 = 142 +
780 = 779 +
450 = 448 +
380 = 380 +
720 = 715 +
670 = 668 +
840 = 834 +
860 = 856 +
970 = 968 +
240 = 240 +
80 = 77 +