My 2 cents worth...
To be as precise as possible, I'd recommend using BOTH:
a) the ROUND function and b) Formatting
...to the same number of decimal places.
For example, if the individual numbers are derived via formulas, use =ROUND(xxx,8) - where xxx is your existing formula. Do the same with the "total" formula.
Then format all the cells as: Number - 8 decimals.
Hope this helps.
Regards, ...Dale Watson
HOME: nd.watson@shaw.ca