Pedagogical treatise on commercial and practical arithmetic, with extensive use of arabic numerals, descriptions of operations such as multiplication and division, and particular attention to proportions (using the rule of three), money-changing (fiorini, bolognini, and ducati), and alloys of precious metals.
Arithmetic -- Early works to 1900, Arithmetic, Mathematics -- Early works to 1800, Mathematics, Merchants -- Italy, Merchants, Italy, Codices, Treatises, Manuscripts Italian, Manuscripts Renaissance.
History of Science, Technology, and Medicine | Medieval Studies
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Link in IIIF Manifest
Porter, Dot, "Collation Model for LJS 289: Algorismus [manuscript]." (2022). Collation Models. 10.