CHRONO

29 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
260 = 258 +
110 = 108 +
140 = 139 +
540 = 534 +
450 = 443 +
840 = 835 +
240 = 240 +
470 = 465 +
710 = 701 +
970 = 962 +
400 = 391 +
150 = 144 +
500 = 499 +
190 = 190 +
770 = 769 +
300 = 291 +
420 = 419 +
750 = 749 +
840 = 837 +
470 = 467 +