First you need to open the app Excel on your iPad desktop.
Next you choose a template (Blank Workbook).
Now you type in the numbers you would like to get the sum for in A-1 through A-8.
Now you highlight the numbers in the cells, to do that you grab the green circle on the first cell and drag down.
Next you go to the formulas tab and click on AutoSum.
- Now you will see the sum in the cell under the cells with your data.