Excel隔三列求和怎么做？如何快速实现？

Excel隔三列求和：快速实现的方法及详细步骤

在Excel中，我们经常需要对数据进行求和操作，尤其是在处理大量数据时，如何高效地进行隔三列求和显得尤为重要。本文将详细介绍如何在Excel中实现隔三列求和，并提供一些快速操作的方法。

一、隔三列求和的基本原理

在Excel中，隔三列求和意味着从第一列开始，每隔两列对第三列进行求和。例如，如果我们的数据从A列开始，那么求和的列将是C列、G列、J列，以此类推。

二、隔三列求和的步骤

1. 打开Excel，准备需要求和的数据。

2. 在需要显示求和结果的单元格中输入公式。假设求和结果的起始单元格为D2，那么在D2单元格中输入以下公式：

```

=SUM(C2, C5, C8, ...)

```

3. 使用拖动填充柄的方法，将D2单元格中的公式向下拖动到需要求和的最后一个单元格。Excel会自动根据公式中的间隔调整求和的列。

4. 如果数据量较大，手动拖动填充柄可能会比较繁琐。此时，可以使用以下方法快速填充：

选中D2单元格。

按住鼠标左键，将光标移动到D2单元格的右下角，当光标变成一个黑色十字时，按下鼠标左键。

按住Shift键，将光标向上或向下拖动，直到覆盖所有需要求和的单元格。

释放鼠标和Shift键，Excel会自动填充求和公式。

三、如何快速实现隔三列求和

1. 使用数组公式：在D2单元格中输入以下数组公式：

```

=SUM(C2:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C100:C1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