(遵义专版)2019中考数学高分一轮复习第一部分教材同步复习第一章数与式课时1实数及其运算权威预测.doc

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(遵义专版)2019中考数学高分一轮复习第一部分教材同步复习第一章数与式课时1实数及其运算权威预测.doc_第1页
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1第一部分 第一章 课时 113 的绝对值是( D )A B 13 13C3 D32遵义市大力发展以大数据为引领的智能终端产业,加快智能终端和大数据电子信息产业发展步伐,全力打造千亿级智能终端产业园,预计整个产业园全面投产后,年产值可达 280 亿元,将 280 亿用科学记数法表示为( C )A2810 11 B2810 10C2.810 10 D2.810 11【解析】280 亿用科学记数法表示为 2801082.810 10.3计算:tan60(2 019) 0| 3|( )1 .313解:原式 13 33 35.

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