Try looking up Egyptian multiplication on wikipedia You ll find the same method is described Is there a case for merging or cross linking them More fundamentally we could use multiplication algorithm for something which is usually done by computer and multiplication method for something which is normally done by hand The above is correct One has to say that the DOUBLING column is added The article DOES NOT SAY that only one column is added It just says the numbers are added which gives garbage Why can t you bring yourself to just say ADD THE CORRECT COLUMN DAMMIT