|Title of host publication||Encyclopedia of Renaissance Philosophy|
|Number of pages||6|
|Place of Publication||Cham|
|Publication status||Published - 2018|
The abbacus school was a school for artisans’ and merchants’ sons, functioning in northern Italy (thirteenth to sixteenth century). It taught the use of Hindu-Arabic numerals and fundamental commercial arithmetic: the rule of three, monetary and metrological conversions, simple and composite interest, partnership, simple and composite discounting, alloying, the technique of a “single false position,” and, finally, simple area calculation. Topics like the double false position were not part of the curriculum, but they are often dealt with in the abbacus treatises; they probably served to show virtuosity in the competition for employment and pupils.