CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
450 = 450 +
20 = 18 +
450 = 446 +
550 = 549 +
170 = 168 +
750 = 744 +
990 = 989 +
900 = 894 +
320 = 320 +
270 = 269 +
320 = 319 +
590 = 586 +
960 = 953 +
620 = 613 +
530 = 527 +
730 = 728 +
180 = 179 +
440 = 440 +
500 = 494 +
510 = 510 +