477+390=?,239+416=?,958+702=?
714-76=?,997-673=?,1340-756=?
73+?=872,248+?=751,1211+?=1669
52*7=?,9*27=?,892*5=?
657/3=?,296/8=?,762/6=?
---
?-235=876-437,186+123+495+320=?
712-227=?+349,521+581+317-1282=?
266+?+340=917,1017+569-732-650=?
229+?-581=423,1991-601-513-419=?
惩罚坏行为