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数学试卷做不完,真不是速度慢,你漏了“读题拆解”这一步

  • 2026-05-08 18:33:26
数学试卷做不完,真不是速度慢,你漏了“读题拆解”这一步

你有没有这种经历,数学考试结束铃响,你看着卷子后面大片空白,心里一阵发凉。你明明感觉自己一直在写,手都没停过。别人都说你速度慢,你信了很久。直到有一天你才发现,真相根本不是这样。

我读初中的时候,数学就是短板。不是不会做,是根本做不完。那种感觉就像你明明会这道题,却来不及把答案写上去。我试过各种方法,逼自己写快点,跳过选择题先做大题,结果更糟。大题没拿到分,前面选择题还因为赶时间错了一堆。

后来我碰到一个数学老师,他看了我的卷子,说了句话让我记到现在。他说,你不是写得慢,你是读题拆解得不对。很多人一拿到题目,眼睛扫过就开始动笔。条件没看清,问题没搞明白,就凭着感觉往下算。算到一半发现不对劲,再回头重新读题。这一来一回,时间就耗光了。

我试验了一下他教的方法。拿到题目,先把题目读两遍。第一遍读完整,第二遍用笔圈出关键条件。比如“一个三角形一个角是60度,另外两个角的比是2比1”。这种条件你圈出来,脑子里立刻清楚要算什么。你没圈出来,可能就会忽略这个比例关系,用错方法。

拆解题目的第二步是画图。数学题很多有图形,可有些题没给图,你得自己画。画图不是美术,不用漂亮,画个大概就行。我当年遇到一道函数题,条件密密麻麻写了两行。看了半天脑子是乱的。我把它画成坐标轴,把点标上去,瞬间就知道题目在说什么。图形是帮你把抽象变成具体的东西,这一步不能省。

拆解完之后,你就能看出这道题到底在考哪个知识点。比如那道三角形求角度的题,核心就是内角和等于180度。知道了这个,再按比例分配就出来了。很多人卡住,是因为没想清楚题目的核心是什么,就乱套公式。公式背了一堆,哪个该用哪个不该用,自己没数。

我试了这个方法一个月,考试突然就能做完了。不是因为我变聪明了,是因为我节省了重复读题和走弯路的时间。原来半小时只能做三道大题,后来能做五道。速度就是这么提上来的。

你下次做题可以试一下,不要急。拿到题,深呼吸,把题拆开,把条件看清楚,把自己要算什么想明白。这一步花掉你三分钟,但后面算题的时间可能省下十分钟。

做不完数学卷子,真不是你的手在偷懒,是你的脑子在偷懒。你缺的从来不是手速,而是拆题的耐心。

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  137. /yingpanguazai/ssd/ssd1/www/www.sjds.net/vendor/topthink/think-template/src/template/driver/File.php ( 2.41 KB )
  138. /yingpanguazai/ssd/ssd1/www/www.sjds.net/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/www.sjds.net/runtime/temp/5febe16c9207553ef9b4c4406f7af920.php ( 12.06 KB )
  140. /yingpanguazai/ssd/ssd1/www/www.sjds.net/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000607s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000898s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000397s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000384s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000841s ]
  6. SELECT * FROM `set` [ RunTime:0.000326s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000931s ]
  8. SELECT * FROM `article` WHERE `id` = 489944 LIMIT 1 [ RunTime:0.000668s ]
  9. UPDATE `article` SET `lasttime` = 1778243950 WHERE `id` = 489944 [ RunTime:0.001678s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000399s ]
  11. SELECT * FROM `article` WHERE `id` < 489944 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000806s ]
  12. SELECT * FROM `article` WHERE `id` > 489944 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001895s ]
  13. SELECT * FROM `article` WHERE `id` < 489944 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001199s ]
  14. SELECT * FROM `article` WHERE `id` < 489944 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001509s ]
  15. SELECT * FROM `article` WHERE `id` < 489944 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001761s ]
0.126830s