CHRONO

10 s.

Ajouter et retrancher des nombres comme 8, 9, 11, 12.

CHRONO

0 s.
663 - 9 =
817 + 11 =
557 + 12 =
465 - 8 =
272 - 12 =
593 - 11 =
334 + 11 =
961 + 8 =
866 + 12 =
633 - 11 =
874 + 9 =
881 + 11 =
462 + 8 =
348 + 11 =
789 - 11 =
452 + 12 =
41 - 12 =
56 + 11 =
250 + 11 =
700 - 8 =