You can add Formulas to Tables in Microsoft Word with relative ease. To learn how to insert Formula in Word Table, read this article.

Performing Calculations in a Table When working with tables, I often use the Formula feature to perform basic calculations in Word.

While Microsoft Word is designed primarily for text, it is possible to add mathematical formulas within a document. The multiplication function is one of the standard formulas available for Word ...

If you store values and formulas in a Word form field, Word can apply a data type to the data rather than interpreting everything as normal text. Form fields can store static values and formulas.

Microsoft Word has a date field, but it's not easy to use in an expression. If you need to update dates in a document, use Excel to calculate the dates and then run a mail merge.