CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
290 = 284 +
850 = 849 +
410 = 410 +
580 = 574 +
420 = 412 +
930 = 926 +
710 = 706 +
400 = 391 +
540 = 533 +
900 = 899 +
770 = 761 +
870 = 868 +
160 = 152 +
120 = 115 +
620 = 620 +
560 = 555 +
220 = 218 +
870 = 867 +
310 = 307 +
840 = 836 +