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一、考点分析1.实数部分主要考查相反数、倒数、绝对值、平方根、立方根、无理数、科学计数法(包括近似数精确度的确定)、实数的有关运算、实数大小的比较、非负数的性质与应用等.特别是以实际问题为背景,结合当前的社会热点问题考查近似数、科学记数法,创新题型不断涌现,如找规律、新定义运算的题型,旨在考查观察分析能力、归纳总结能力与应变适应能力等.在中考中多以选择题、填空题、计算题的形式出现,试题难度为低、
First, the test center analysis 1. The real part of the main test of the opposite, reciprocal, absolute value, square root, cube root, irrational number, scientific counting (including the accuracy of approximate number determination), real number of operations, real size comparison, Nature and application, etc. Especially on the background of practical problems, combined with the current social hot issues to examine the approximate number, scientific notation, innovative problems continue to emerge, such as looking for the law, the new definition of the operation of the type is designed to examine the observation and analysis Ability, summed up the ability to adapt to and adaptability, etc. In the test in the form of multiple-choice questions, fill in the blank questions, calculation questions appear, the difficulty of the questions is low,