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题型:解决问题 题类:常考题 难易度:容易
异分母分数加、减法(不含带分数) 6913
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1)三人一共吃了蛋糕的几分之几?2)蛋糕还剩下多少?
+ = + = - = + =
+ = - = - = - =
+ = + = - = + =
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