212+532=?,271+561=?,401+618=?
758-98=?,824-202=?,898-382=?
66+?=864,296+?=818,366+?=957
35*4=?,60*7=?,42*10=?
56/?=?,100/2=?,85/5=?
---
?-283=769-493,106+269+387+134=?
840-286=?+380,343+126+209-620=?
259+?+337=924,470+293-196-377=?
254+?-482=294,999-355-196-320=?
没钱买蛋糕