i want to use if formula when the cell has number ends with .1 like 452.1

hi all
i want to use formula( if) when the cell has number like 4523.1 or any further numbers 4523.20 or 4523.60

like = if (D5="number ends with .1",true,"") or any other actions i want to run it in my formula


thanks in advance

Hazemrezo