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六年级上册数学《圆的周长》同步练习,带答案解析

  • 2026-11-04 13:15:56
六年级上册数学《圆的周长》同步练习,带答案解析

六年级这一节的公式就一行，孩子背得挺熟，一到题里就不知道该用直径还是半径。半圆的题更容易错，算完忘了加那条直径，几分就没了，问他为什么这么算也说不明白。

摊开也就11页，填空、选择、判断和解答四类分开排，跟教材这一节的进度对得上，翻到哪一页都能找到课上学过的那道例题。前面的题帮着把概念捋清，后面的解答题才见真章，答案带解析，每一步怎么来的都写着。

课上讲完当天做最合适，一课时配套的量，不给孩子加负担。做完先让孩子自己讲一遍思路，讲得顺说明真会了，讲不下去就翻回解析看那一步，比反复刷题管用。

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学习笔记 11.3

基本 文件 流程 错误 SQL 调试
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  1. CONNECT:[ UseTime:0.000622s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000879s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000440s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000333s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000583s ]
  6. SELECT * FROM `set` [ RunTime:0.000343s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000648s ]
  8. SELECT * FROM `article` WHERE `id` = 574939 LIMIT 1 [ RunTime:0.000362s ]
  9. UPDATE `article` SET `lasttime` = 1793964523 WHERE `id` = 574939 [ RunTime:0.001259s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000329s ]
  11. SELECT * FROM `article` WHERE `id` < 574939 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000398s ]
  12. SELECT * FROM `article` WHERE `id` > 574939 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000556s ]
  13. SELECT * FROM `article` WHERE `id` < 574939 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000601s ]
  14. SELECT * FROM `article` WHERE `id` < 574939 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000635s ]
  15. SELECT * FROM `article` WHERE `id` < 574939 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000694s ]
0.083373s