七年级数学上册第二章有理数2.11有理数的乘方练习(新版)华东师大版.doc

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12.11 有理数的乘方一、填空题:算式(3)(3)(3)(3)用幂的形式可表示为,其值为.二、下列各组数中,数值相等的是( )A B C D三、计算:(1) ;(2) ;(3) ;(4)(2) 3(0.5) 4.四、解答题:假如我们的计算机每秒钟能够计算 10 亿种可能性,那么,10 台计算机一个世纪能够分析多少种可能性?与 比较,哪个大?(假如一年有 365 天,一天有 24 小时)2参考答案:一、 (3) 4,81二、A三、1.(1) ;(2) ;(3) ;(4)0.5.四、10 台计算机一个世纪能够分析

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