3 Ways to Fix Mail Merge Number Formats in Microsoft Word For example, instead of displaying 1.0014, Mail Merge showed 1.0013. Okay. But let’s say that you can’t or don’t want to change your Excel spreadsheet. Well, there is something we can do in Word: 2. Use a “Numeric Switch” in Word. The second way to cajole Mail Merge into displaying numbers from Excel correctly is to modify the Word ...