五年级上册数学练习册71页用数学第2题

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五年级上册数学练习册71页用数学第2题
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五年级上册数学练习册71页用数学第2题
五年级上册数学练习册71页用数学第2题

五年级上册数学练习册71页用数学第2题
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3分之1减9分之1=9分之2

3分之1减9分之1=9分之2

3分之1减9分之1=9分之2

3分之1减9分之1=9分之2