CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
130 = 123 +
920 = 919 +
720 = 718 +
540 = 539 +
840 = 832 +
130 = 121 +
640 = 637 +
760 = 755 +
90 = 85 +
60 = 59 +
250 = 243 +
120 = 116 +
520 = 520 +
40 = 37 +
920 = 920 +
390 = 388 +
650 = 648 +
440 = 433 +
680 = 675 +
870 = 862 +