476+312=?,200+445=?,465+749=?
725-39=?,949-658=?,934-161=?
25+?=881,201+?=748,346+?=923
83*7=?,65*9=?,289*2=?
702/9=?,852/3=?,738/6=?
---
?-266=848-457,124+154+429+160=?
723-254=?+389,556+388+200-913=?
249+?+317=967,490+435-200-361=?
268+?-574=490,999-224-130-483=?
胶带粘枪管