I can reproduce this with org 9.3.1. I imagine the decimal numbers have precision problems when converted to binary floating point.
A simpler table to reproduce: | 83.6 | | .1 | |-------------------| | 83.69999999999999 | Kein Test <soetwasabera...@gmail.com> writes: > Hi, > > I found out about org-table-sum yesterday, but I quickly ran into a > problem, where the result is not right. > > For example: > > | 171.00 | > | 4.07 | > | 4.44 | > | 2.61 | > | 12.21 | > | 6.69 | > | 19.72 | > | 23.09 | > | 6.23 | > | 15.28 | > | 250.00 | > | 250.00 | > | 250.00 | > | 78.85 | > | | > > If point is at the last cell, org-table-sum evaluates to 1094.1899999999998. > > I did not find a way to reproduce this with other numbers, but the > order seems to matter. > > Best wishes