CHRONO

2 s.

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

CHRONO

0 s.
64 + 12 =
494 + 11 =
254 - 9 =
479 - 8 =
708 + 9 =
253 - 8 =
608 + 9 =
365 + 11 =
844 - 12 =
586 - 9 =
939 - 9 =
198 + 8 =
24 - 11 =
650 - 8 =
586 + 8 =
452 + 12 =
672 - 9 =
311 + 11 =
49 - 11 =
262 - 8 =