CHRONO

10 s.

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

CHRONO

0 s.
591 - 11 =
827 - 11 =
914 - 11 =
841 - 12 =
227 + 8 =
364 - 8 =
890 - 11 =
597 + 11 =
126 + 9 =
155 - 8 =
119 + 8 =
344 + 12 =
859 + 9 =
544 + 12 =
562 + 12 =
640 + 9 =
344 - 12 =
321 - 12 =
458 + 8 =
110 - 11 =