CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
910 = 907 +
230 = 229 +
340 = 340 +
570 = 566 +
1000 = 999 +
650 = 641 +
480 = 480 +
100 = 91 +
690 = 690 +
700 = 691 +
620 = 614 +
70 = 69 +
380 = 376 +
650 = 649 +
450 = 448 +
1000 = 995 +
640 = 639 +
20 = 19 +
980 = 980 +
800 = 799 +