I'm pretty sure this is overkill, but it works;
=IF(SUMPRODUCT((MOD(ROUND(A1,2),1)={0,0.25,0.5,0.75})*1)=1,"","error")
If your values are in A1, this looks at the digits to the right of the
decimal point once rounded (formatting doesn't make any difference to the
actual value of the number) to see if they are 0,.25,.5,.75. if they're not,
"error". this formula would have to be copied down.
maybe theres a way to look at what the format produces..
CatheyM said:
Is it possible to put in a formula for a range of cells (which are
formatted to two decimal places), where if the two digits after the decimal
point are not equal to 00 or 25 or 50 or 75, it returns an error?