Wrong Sum() Showing

I have a formula (see below) in a spreadsheet that should return the sum. Instead it returns an error because instead of the sum equaling zero, it equals 0.000000000014551915228366900000. The numbers that it is summing are typed and only have 2 decimal places. Rounding should not be an issue.

Does anyone have any idea why it is not returning zero?

Formula:
=IF(SUM(A1:A6)=C1,SUM(A1:A6),"error")
(I also attached the spreadsheet for review)

Thank you for your help!

Try the following version of your formula:

=IF(round(SUM(A1:A6),2)=round(C1,2),round(SUM(A1:A6),2),"error")

The round function will throw away small bits of number that are accumulated when manipulating numbers in Excel.

For example, the number 2.33 cannot be stored exactly. It might have an actual machine value of 2.33000000000016 . The rounding throws away the insignificant differences.