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引入负数后的数学运算
视频地址:
https://video.cache.bdschool.cn/vd/05609d5f999a16a89fb724acb88c32c9.mp4
附件:
2015WKSX07011引入负数后的数学运算.docx
附件:
2015WKSX07011引入负数后的数学运算.pptx
北京市
初一数学
15
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Jul 15, 2021
正负数符号表示与应用
2015WKSX07010 正数减去负数的差正数减去负数的差
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