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2019年春八年级数学下册第16章二次根式16.2二次根式的运算16.2.1二次根式的乘除第3课时二次根式的大小比较课时作业（新版）沪科版.docx

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2019年春八年级数学下册第16章二次根式16.2二次根式的运算16.2.1二次根式的乘除第3课时二次根式的大小比较课时作业（新版）沪科版.docx_第1页
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1第 3 课时 二次根式的大小比较知识要点基础练知识点 二次根式的大小比较1.下列式子中,值最小的是 (D)A. B.10C.3 D. 72.比 2 小的正整数有 (B)3A.4 个 B.3 个C.2 个 D.1 个3.比较大小:(1)3 2 ; 2 3(2)-2 -6 . 6 2综合能力提升练4.比较 2, 的大小,正确的是 (A)5, 6A.2-3 .13 6 13 6(2)(5- )-(2+ )=3-2 ,3 3 3 3= ,2 ,9 2018+ 2017 ,12019+ 2018 12018+ 2017 .2019- 2018 2018- 2017

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