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【Excel】小数取整/保留X位的各种情况

  • 2026-03-30 03:06:46
【Excel】小数取整/保留X位的各种情况
大家好，我是木木^^
在制作报表中，有时会遇到调整小数位数、或取整的需求，我们一起来看看如何实现不同的需求：
1. 保留X位小数，四舍五入
ROUND函数
公式：=round(值，保留小数的位数)
例如保留2位：=round(A4,2)；取整：=round(A4,0)
特点：按保留位数四舍五入
2. 保留X位小数/取整，第（X+1）位只要有值，X位自动进一位，即向上取整
如下示例对比：
ROUNDUP函数
公式：=roundup(值，位数）
例如保留2位：=roundup(A4,2)；取整：=roundup(A4,0)
特点：按保留位数进一位
3. 保留X位小数/取整，第（X+1）位无论是什么值全舍，即向下取整
如下示例对比：
ROUNDDOWN函数
公式：=rounddown(值，位数）
例如保留2位：=rounddown(A4,2)；取整：=rounddown(A4,0)
特点：不进位
4. 取整 & 不进位（向下取整）
INT函数 和 TRUNC 函数，2个函数功能是一样的，公式语法也是一样的：
INT函数公式：=int(A4);
TRUNC函数公式：=trunc(A4)
特点：只能取整、且不进位，只保留整数位
5. 向上取整且 可根据指定数值取离它最近的倍数
CEILING函数
公式：=ceiling(值，参数)
如上图示例，参数是1，效果等同roundup，向上取整；参数是3，则是向上取整后 最近的3的倍数
特点：取整，且取其参数最近的倍数值
除此之外，我们再来看一下：若不修改数值内容，只修改显示的格式呢？
1）快捷键 CTRL + SHIFT + 1
特点：实际数值没有变，仅仅是展示出来的取整，方便查看
2）如需保留小数位数，就是大家最常用的：设置单元格格式
操作：选中数值——快捷键CTRL+1——设置单元格格式——数值取位数
特点：设置显示的小数位数，显示值四舍五入，不改变实际数值。
总结一下：
我们今天练习了小数保留不同位数或取整时，如何满足不同需求的操作：
如果不改变表单中的数值，仅仅改变显示的格式：
1）快捷键：ctrl+shift+1 ——取整，显示的值四舍五入
2）设置单元格格式 ——可任意设置小数位数，显示的值四舍五入
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  138. /yingpanguazai/ssd/ssd1/www/h.sjds.net/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/h.sjds.net/runtime/temp/ad153693ed39fba6d1bda2fe72512cde.php ( 12.06 KB )
  140. /yingpanguazai/ssd/ssd1/www/h.sjds.net/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000660s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000830s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000336s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000270s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000492s ]
  6. SELECT * FROM `set` [ RunTime:0.000185s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000608s ]
  8. SELECT * FROM `article` WHERE `id` = 484358 LIMIT 1 [ RunTime:0.000507s ]
  9. UPDATE `article` SET `lasttime` = 1775469529 WHERE `id` = 484358 [ RunTime:0.010802s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000265s ]
  11. SELECT * FROM `article` WHERE `id` < 484358 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000413s ]
  12. SELECT * FROM `article` WHERE `id` > 484358 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000442s ]
  13. SELECT * FROM `article` WHERE `id` < 484358 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001007s ]
  14. SELECT * FROM `article` WHERE `id` < 484358 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001859s ]
  15. SELECT * FROM `article` WHERE `id` < 484358 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003538s ]
0.088633s