I have a list of numbers. Some begin with a 3 and don’t need to be changed; others begin with a 1 and require a zero added to the beginning. I have this formula that was supplied to add the zero:


but I need to apply this only to the numbers starting with a 1.

How can I do this?

  • Adding a 0 - is this text? – Raystafarian Aug 14 '15 at 14:59

This should work:


Copy and drag to the other cells.


Try something like


The "IF" is just to check that the first character on the left is "1"


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