云南省2019年中考数学总复习第一单元数与式第01课时实数及其运算课件.ppt

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UNIT ONE,第一单元 数与式,第 1 课时 实数及其运算,考点一 实数的分类,考点聚焦,0,无限循环,0,考点二 实数的有关概念,原点,正方向,单位长度,实数,0,距离,乘积,考点三 科学记数法、近似数,考点四 实数的运算,乘方,开方,1,-1,1,乘除,加减,对点演练,探究一 实数的分类,答案 B,针对训练,探究二 相反数、倒数、绝对值,针对训练,探究三 实数的大小比较,针对训练,探究四 科学记数法,针对训练,探究五 实数混合运算,针对训练,

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