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五年级-数学（北京版）-分数的基本性质（二）

视频地址：https://video.cache.bdschool.cn/vd/09d7d168b422a0ed2c7455a03a687341.mp4
附件：0605五年级数学（北京版）-分数的基本性质（二）-1教案.docx
附件：0605五年级数学（北京版）-分数的基本性质（二）-2PPT课件.pdf
附件：0605五年级数学（北京版）-分数的基本性质（二）-3学习任务单.docx

19 views Jul 15, 2021

五年级-数学（人教版）-约分（二）五年级-数学（北京版）-包装中的数学问题

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