10. Quickly Number Table Rows
You can number the rows in a table in such a way that they will automatically update if you add, move, or remove rows. Add a new column in which to place the numbers, select it (or select an existing column if you want to place numbers in front of the contents of each cell in that column), and click Home > Numbering.
Word will automatically number the cells in the table. If you move a row to a different position -- if, for example, you use the Shift-Alt-Up Arrow or Shift-Alt-Down Arrow keystrokes -- the row numbers will instantly update.