286+367=?,102+453=?,394+792=?
601-25=?,938-584=?,965-262=?
94+?=680,556+?=773,218+?=938
48*7=?,84*6=?,152*4=?
248/4=?,768/3=?,925/5=?
---
?-248=839-438,145+103+431+115=?
704-262=?+364,598+361+238-984=?
222+?+361=946,466+294-173-339=?
278+?-455=300,999-382-123-324=?
独自下楼玩