You can put some checks to make sure that your assumptions are correction. Just like assertions in source code.

For example, to check if cell G4 and G6 are really equal, following check could be used.
=IF(G4=G6;”SAME”;”DIFFERENT”)

———————–
Also try changing precision (decimal places) used for display purpose.

Tools -> Options –> OO.Calc -> View

Also make sure to increase column widths to properly display higher precision values.

Well, not having used a spreadsheet in a while, I would have expected the underlying calculated value to be what gets displayed as the presented value. But, figured out what was wrong 🙂

I would be very pissed if what i see on the screen was the underlying numerical value.

I would say you are confusing content with presentation.

Nope you are not. As a comment states, it is best to use round().

Isn’t what I see on the screen supposed to be the underlying numerical value ? 🙂

Expand the formatting for all of the values in column ‘F’ to multiple decimal places… say, 10

It is the formatting of the cells and the number decimal places… a common gotcha with spreadsheets where calculated values are used in subsequent computations and then compared to hand entered values with less decimal places..

What you see on the screen isn’t exactly what the underlying numerical value is.

I did the calculations on a standard calculator and found no errors…

or am I missing something?

Select the column G and click the button to add decimal places a few times. What you copied down is not exactly the same number as was calculated.