289+587=?,291+589=?,464+688=?
785-25=?,845-268=?,820-321=?
70+?=829,283+?=897,360+?=963
33*4=?,42*7=?,75*6=?
198/9=?,520/5=?,800/2=?
---
?-252=736-483,196+286+380+193=?
881-266=?+309,315+286+209-681=?
227+?+328=969,443+257-193-395=?
275+?-437=215,999-307-133-339=?
天气晚来秋