458+343=?,272+402=?,959+719=?
728-74=?,936-689=?,1391-700=?
35+?=827,293+?=749,1226+?=1674
17*7=?,9*78=?,887*5=?
603/3=?,216/8=?,774/6=?
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?-246=818-435,194+109+468+354=?
766-259=?+303,572+520+324-1202=?
266+?+389=968,1043+544-786-683=?
235+?-536=415,1920-632-552-450=?
奖励好表现