Use two helper columns (column G and H for instance) and put the formula
=IF(MOD(CELL("row",F5),2)=0,F5,0) in Column G for even rows and use formula
=IF(MOD(CELL("row",F5),1)=0,F5,0) in Column H for odd rows.
Gary

"csfrolich" wrote:

I am attempting to add every other cell in a 958 row set of numbers.

For instance: =SUM (F5+F7+F9+F11+F13......F957) and then I want to add all
the even number rows, =SUM (F6+F8+F10+F12+F14......F958).

Any suggestions other than typing this formula out.

Thanks