An introduction to arithmetick, [electronic resource] : containing the arithmetick of integers, of vulgar fractions, and of decimals finite, infinite repeting, and infinite circulating. Together with the more necessary and useful rules in business, viz. The Rules of Three, of Five, of Fellowship, and Rules for Practice. To the whole is subjoined an appendix, shewing the common practice of measuring mason and joyner-work. By John Wilson A. L. M. Teacher of Mathematicks, and consequently, Navigation. Also Arithmetick separately, at particular Hours.