When I begin adding numbers to a row, columns A thru S, in a spreadsheet the curser jumps from column H to I, then back to H changing the formula in column I from =sum(E45:F45) to =sum(E45:G45). It includes column G now and I don't want it to. Is this a property of Formulas that can be changed or something? I am baffled by this. It is so annoying because everytime I enter data I have to correct the formula in column I. Thanks in advance for your help.