You can sum cells across multiple sheets in Excel. This article presents steps for Adding single-cell values or Adding values in the range of cells.

Comparing two Excel sheets and combining the unique data can be done with the help of macros. There are several macros available for free that can be downloaded from the internet and tweaked according ...

How to Unlink Two Excel Spreadsheets. When you connect data from one Excel spreadsheet to a cell in another, the two sheets become permanently linked. Future changes made to the data on one sheet ...