CHRONO

10 s.

Calculer des compléments à la dizaine supérieure.

CHRONO

0 s.
330 = 325 +
790 = 788 +
170 = 165 +
830 = 823 +
100 = 96 +
460 = 458 +
500 = 491 +
440 = 433 +
210 = 206 +
970 = 969 +
60 = 57 +
720 = 719 +
670 = 667 +
690 = 682 +
400 = 398 +
640 = 639 +
30 = 27 +
540 = 538 +
290 = 282 +
270 = 262 +