Word may not be a spreadsheet, but it can perform basic calculations in tables. To sum the numbers in a row, enter numbers in all cells except the right-hand cell, click in the right-hand cell, choose Table | Formula, and accept Word’s suggestion of =SUM(LEFT). To sum the numbers in a column, go to the bottom cell and accept Word’s suggestion of =SUM(ABOVE). You can also enter basic spreadsheet-style calculations such as =A1*B2. Although the row and column headings aren’t visible, the letters in cell references correspond to the columns and the numbers to the rows, just as they do in Excel.

To update a calculation, select the cell with the sum and press F9. Or to update all the calculations in a table, select the table (or document) and press F9.