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四年级-数学（北京版）-小数加、减法（一）

视频地址：https://video.cache.bdschool.cn/vd/eae79291cd9fa68d6509ec51b8489860.mp4
附件：0514四年级数学（北京版）-小数加减法第一课时-1教案.docx
附件：0514四年级数学（北京版）-小数加减法第一课时-2PPT课件.pdf
附件：0514四年级数学（北京版）-小数加减法第一课时-3学习任务单.docx

18 views Jul 15, 2021

四年级-数学（人教版）-乘法分配律第一课时四年级-数学(人教版-)乘、除法的意义和各部分之间的关系

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