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2019年深圳中考真题数学试卷

  • 2026-04-24 17:01:53
2019年深圳中考真题数学试卷

2019年深圳中考真题数学试卷

初三  |  数学  |  中考真题  |  下学期  | 

考察知识点

核心二次函数与反比例函数图象性质的综合理解与识别
核心三角形中位线定理的空间几何推理与证明
重点平行线性质与几何图形的综合运用
重点立体图形展开图的空间想象与识别
基础绝对值运算与科学记数法的实际应用
基础统计中位数和众数的概念理解与计算
基础幂的运算法则与轴对称图形识别

中考权重

选择题36%
几何综合25%
函数应用20%
代数运算19%

重点题型

几何中位线综合推理题难

涉及三角形中位线定理的空间想象和逻辑推理，需要较强的几何分析能力

函数图象识别题难

考查二次函数与反比例函数性质的综合理解，需要深入分析函数特征

平行线性质应用题中

结合几何图形考查平行线的判定与性质，需要一定的推理能力

立体图形展开题中

考查空间想象能力和立体几何的基本认知

科学记数法应用题易

结合5G用户数量等实际情境，考查科学记数法的基本运用

基础运算题易

包括绝对值、幂运算等基础代数运算

命题趋势

① 注重基础知识：注重基础知识的扎实掌握，前半部分题目考查基本概念和运算技能

② 突出数学知识：突出数学知识的实际应用，如科学记数法结合现代科技发展情境

③ 强化几何推理：强化几何推理能力的考查，平行线、三角形等几何知识综合运用

④ 重视函数图象：重视函数图象与性质的对应关系理解，从图象识别函数特征

⑤ 命题由易到难：命题由易到难梯度合理，体现「基础扎实、能力立意、适度综合」特点

备考策略

① 夯实基础知识：夯实基础知识，重点掌握绝对值、科学记数法、幂运算等基本概念和运算法则
② 加强几何推理：加强几何推理训练，熟练掌握平行线性质、三角形中位线等几何定理的应用
③ 培养函数图象：培养函数图象分析能力，理解二次函数和反比例函数的性质与图象特征
④ 提升空间想象：提升空间想象能力，多练习立体图形展开图和几何体的识别
⑤ 注重数学与生：注重数学与生活实际的联系，关注科技发展中的数学应用问题

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  1. CONNECT:[ UseTime:0.000930s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001731s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.007123s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000754s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001394s ]
  6. SELECT * FROM `set` [ RunTime:0.001054s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001525s ]
  8. SELECT * FROM `article` WHERE `id` = 481911 LIMIT 1 [ RunTime:0.007846s ]
  9. UPDATE `article` SET `lasttime` = 1777024980 WHERE `id` = 481911 [ RunTime:0.012092s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000738s ]
  11. SELECT * FROM `article` WHERE `id` < 481911 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.013372s ]
  12. SELECT * FROM `article` WHERE `id` > 481911 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.052003s ]
  13. SELECT * FROM `article` WHERE `id` < 481911 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.008466s ]
  14. SELECT * FROM `article` WHERE `id` < 481911 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.056293s ]
  15. SELECT * FROM `article` WHERE `id` < 481911 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.063964s ]
0.412571s