CHRONO

10 s.

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

CHRONO

0 s.
181 - 12 =
901 - 11 =
608 + 9 =
741 - 8 =
838 - 12 =
861 + 11 =
244 - 12 =
767 + 9 =
442 + 12 =
788 - 8 =
263 + 12 =
957 + 9 =
887 + 12 =
619 - 9 =
541 - 8 =
639 + 12 =
603 + 9 =
698 + 9 =
179 - 9 =
924 + 12 =