吉林省白城市通榆县七年级数学上册1.4有理数的乘除法1.4.2有理数的除法导学案1(无答案)(新版)新人教版.doc

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吉林省白城市通榆县七年级数学上册1.4有理数的乘除法1.4.2有理数的除法导学案1(无答案)(新版)新人教版.doc_第1页
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1课题:1 .4.2 有理数的除法(1) 授课时间: _ 姓名:_ 七年_班【 学习目标】:1、理解除法是乘法的逆运算;2、理解倒数概念,会求有理数的倒 数;3、掌握除法法则,会进行有理数的除法运算;【重点难点】:有理数的除法法则预习案1) 、小红从家里到学校,每分钟走 50 米,共走了 20 分钟。问小红家离学校有 米,列出的算式为 。2)放学时,小红仍然以每分钟 50 米的速度回家,应该走 分钟。列出的算式为 从上面这个例子你可以发现,有理数除法与乘法之间的关系是 3)写出下列各数的倒数-4 的倒数 , 3 的倒数 ,-2 的倒数 ;检测案计算 (1) 2135; (2) 0(-1000);(3) 1 (-9) (4) (-6.5)1.3 2(5) 37523(6) (-6.2)0.5(-20)

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