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Am 08.08.2012 18:12, teknow wrote:
I have a list of measured times in [H]:MM:SS format and I would like to sum
them.  If I put in a formula:

= B2+B3+B4+B5

it works, but if I try:


I get "00:00:00" as a result.  What am I missing?

I have tried both LibO and


Works for me with all numbers but not with text:

LibreOffice and Excel suffer from the same bug. They do an implicit conversion from string to number when arithmetic operators are used with strings. The arithmetic functions are designed to ignore all strings. A properly programmed spreadsheet application would never convert any string unless you tell it to do so and it would throw a #VALUE! error whenever a string comes in the way of an arithmetic operation. Unfortunately, typical Excel users prefer easy data over correct ones which leads to massive confusion about very simple facts.

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