CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
400 = 399 +
900 = 899 +
80 = 79 +
420 = 416 +
660 = 656 +
450 = 450 +
390 = 386 +
430 = 421 +
890 = 890 +
790 = 787 +
40 = 40 +
520 = 519 +
700 = 694 +
950 = 941 +
540 = 538 +
540 = 534 +
600 = 597 +
930 = 927 +
230 = 222 +
820 = 811 +