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文件名称：1.1正数与负数讲义人教版七年级数学上册(1).docx
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1.1正数与负数
【人教版新教材·2024】
【知识点一：正负数的定义】···································································································1
【知识点二：具有相反意义的量】·······························································································1
【知识点三：正负数的实际运用】··································