1. Select the cell you where you want to put the result of your addition
2. Type in =sum(
[To get the ‘(‘ symbol – hold down the ‘Shift’ key on your keyboard and press the ( key on your keyboard.]
3. Using your computer mouse – Select and drag down all the cells you want to add (since it is a column of numbers we are adding in our example). If we were adding a row of numbers we would drag across.
4. Press the ‘Enter’ key on the keyboard.
Excel has performed the addition for us