CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
550 = 548 +
920 = 912 +
730 = 723 +
970 = 969 +
640 = 636 +
740 = 739 +
40 = 38 +
460 = 457 +
380 = 378 +
100 = 98 +
80 = 75 +
40 = 39 +
300 = 298 +
490 = 487 +
160 = 157 +
280 = 275 +
790 = 782 +
320 = 312 +
150 = 150 +
530 = 524 +