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2025年北辰区四年级数学下册期末试卷分析及真题免费下载

  • 2026-05-21 22:04:00
2025年北辰区四年级数学下册期末试卷分析及真题免费下载
 

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学科:数学 | 年级:四年级 | 版本:人教版 | 类型:期末试卷 | 试卷页数:4页 | 满分:100分 | 考试时间:70分钟

   知识点梳理  

本套试卷覆盖四年级下册以下核心知识点:

1. 小数的性质和大小比较—小数的末尾添上0或去掉0大小不变(第1题),小数大小比较。

2. 运算定律(乘法分配律)—(10+20)×15=10×15+20×15,理解乘法分配律的几何意义(第2题)。

3. 小数的意义—用正方形方格表示0.5元,理解小数与分数的对应关系(第3题)。

4. 三角形的高—指定底边上的高,垂足的位置判断(第4题)。

5. 平均数与统计—三位同学成绩统计,谁跑得最快(比较大小)。

6. 四则运算—含括号的混合运算,运算顺序判断。

7. 简便计算—乘法分配律、连减性质、凑整等方法进行简便运算。

8. 图形与几何—轴对称图形、平移、三角形内角和、等腰三角形特征。

9. 解决问题—租船/租车最优方案、购物找零、行程问题等综合应用。

   重难点分析  

1. 乘法分配律的几何模型(第2题)—通过梯形面积两种计算方法引出乘法分配律,需要将几何直观与代数运算建立联系。

2. 三角形高的画法(第4题)—指定底边上的高,需要正确识别底边并作垂线,钝角三角形的高可能在三角形外部。

3. 小数末尾添0大小变化(第1题)—整数末尾添0会扩大10倍(24→240),而小数末尾添0大小不变(2.4→2.40),学生容易混淆。

4. 租船最优方案—需要分类讨论大船小船各种组合,比较总价,找到最省钱的方案。

   易错点提醒  

1. 小数末尾添0的规则混淆—整数末尾添0会变大,小数末尾添0大小不变,学生容易混用这两个规则。

2. 乘法分配律与结合律混淆—(a+b)×c=a×c+b×c是分配律,a×b×c=a×(b×c)是结合律,学生容易搞混。

3. 三角形高画错—不是从顶点向对边作垂线,而是画成从底边中点向上作线。

4. 统计表中"跑得最快"误判—用时越少跑得越快,学生容易认为数值大的跑得快。

5. 运算顺序错误—括号内先算,乘除后加减,有学生先算加减再算乘除。

   备考建议  

1. 小数性质专项训练—多做"末尾添0/去0大小变化"对比练习,区分整数和小数的不同规则。

2. 运算定律强化—乘法分配律是四年级重点,建议用面积模型辅助理解,多做(a+b)×c和a×(b+c)的展开练习。

3. 三角形高和角度的作图练习—动手画各种三角形的底和高,熟悉垂线的画法,理解直角、锐角、钝角三种三角形高的位置。

4. 统计图表读图能力—学会从图表中提取有用信息,理解"最快"、"最多"等比较概念的含义。

   试卷截图  

以下为试卷部分页面,完整试卷请往下滑动查看下载方式。

 

第1页

 

第2页

 

第3页

 

第4页

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  1. CONNECT:[ UseTime:0.000731s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000796s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000262s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000286s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000501s ]
  6. SELECT * FROM `set` [ RunTime:0.000204s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000622s ]
  8. SELECT * FROM `article` WHERE `id` = 495412 LIMIT 1 [ RunTime:0.000447s ]
  9. UPDATE `article` SET `lasttime` = 1779378023 WHERE `id` = 495412 [ RunTime:0.005941s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000243s ]
  11. SELECT * FROM `article` WHERE `id` < 495412 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000414s ]
  12. SELECT * FROM `article` WHERE `id` > 495412 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000457s ]
  13. SELECT * FROM `article` WHERE `id` < 495412 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000602s ]
  14. SELECT * FROM `article` WHERE `id` < 495412 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000681s ]
  15. SELECT * FROM `article` WHERE `id` < 495412 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000699s ]
0.154769s