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Devine Lu Linvega

@maxime_andre ah yes! I have this one on my wiki, it's called the peasant method sometimes.

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Stewart Russell

@neauoire @maxime_andre I thought this (below) was known as peasant multiplication? You double one number and half the other, and only add the "doubles" where the "halfs" are odd numbers.

Yes, it's simple binary shift and add multiplication, as used on very simple computers

 X               34 	               12 X
 X               68 	                6 X
                136 	                3  
                272 	                1  
34 × 12 = 136 + 272 = 408
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