296+351=?,143+416=?,359+796=?
610-15=?,957-592=?,957-215=?
12+?=636,576+?=728,255+?=948
85*3=?,47*6=?,125*8=?
432/9=?,396/6=?,904/8=?
---
?-266=817-454,118+139+442+163=?
767-213=?+307,593+375+203-985=?
232+?+334=914,405+202-192-345=?
211+?-439=308,999-349-170-362=?
爬梯撞铁伤