CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
800 = 795 +
120 = 119 +
320 = 319 +
550 = 544 +
390 = 385 +
150 = 142 +
130 = 123 +
720 = 717 +
280 = 276 +
250 = 248 +
480 = 473 +
820 = 816 +
220 = 211 +
480 = 477 +
960 = 957 +
840 = 833 +
490 = 481 +
710 = 702 +
120 = 120 +
520 = 513 +