CHRONO

94 s.

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

CHRONO

0 s.
385 - 11 =
709 - 11 =
806 + 9 =
659 + 11 =
479 + 8 =
672 - 12 =
757 - 12 =
28 - 9 =
932 + 12 =
832 - 11 =
907 - 11 =
708 + 11 =
958 + 8 =
238 + 9 =
984 - 9 =
275 - 12 =
455 + 11 =
907 + 12 =
630 - 8 =
262 - 11 =