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2026年河北中考数学试卷及答案填空题

  • 2026-07-14 18:25:43
2026年河北中考数学试卷及答案填空题
前文分析了选择题，本文分析一下填空题。
填空题共4道，每题3分，共12分。
第一道填空题，妥妥的送分题，命题人生怕有学生交白卷，考0分，估计小学水平也能答对，原式=4+6=10，答案为10.
根据题目中AB∥CD，且BD⊥DE，AC⊥DE，可得四边形ABDC是平行四边形，则有CD=AB=4m，∠DCE=∠BAC=60°，由此可得∠CDE=30°，根据直角三角形中30°的角所对的直角边等于斜边一半，可得CE=2m.
题目很基础，平行四边形判定，平行线性质，直角三角形性质，都是必考知识点，也是需要掌握的知识点。
韦达定理是2022年新课标修订后成为必考知识点的，即对于一元二次方程一般式来说，
设此方程一根为a，则另一根可表示为a^2，则a+a^2=-1/4，整理这个关于a的一元二次方程，可得a^2+a+1/4=0，利用完全平方公式，可得
则可得a=-1/2，则另一根为1/4，根据两根之积为m，可得m=-1/8.
看到这道题，第一反应是怀疑，这是中考题？这是中考题里的小压轴题？这难度大还是小，感觉小学生也能上手啊。考得是什么知识？概率吗？最小值问题？请问刷什么模型能遇到这种题。
什么也不要想，更不要想太多，列举一下，共有哪些方案吧，
然后进行一下小学的加法即可。
这里还有重复的。
所以最小值为3+5+7+6=21百元。
这段时间看到很多人说刷题没用，套路没用，但对80分以下的学生来说，还是老老实实地刷点题，才能保证基础知识和基本技能的掌握。成绩在100以来的才能重视把基础搞好。 
个人看法，有错欢迎批评。
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  1. CONNECT:[ UseTime:0.000609s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000582s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000341s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.005787s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000691s ]
  6. SELECT * FROM `set` [ RunTime:0.007577s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000805s ]
  8. SELECT * FROM `article` WHERE `id` = 506892 LIMIT 1 [ RunTime:0.026191s ]
  9. UPDATE `article` SET `lasttime` = 1784077236 WHERE `id` = 506892 [ RunTime:0.033818s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.015643s ]
  11. SELECT * FROM `article` WHERE `id` < 506892 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.013236s ]
  12. SELECT * FROM `article` WHERE `id` > 506892 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.043285s ]
  13. SELECT * FROM `article` WHERE `id` < 506892 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004124s ]
  14. SELECT * FROM `article` WHERE `id` < 506892 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003886s ]
  15. SELECT * FROM `article` WHERE `id` < 506892 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.049508s ]
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