A new treatise of practical arithmetick : done in a plain and easy way for the use of all, but especially for the meanest capacity to attain a full understanding of that most excellent and useful science, with great improvements. Containing, numeration, addition, substraction, multiplication, division, reductions of coin, weights, and measure, the golden rules of three, single and double, direct and reverse, rules of practice, tare and trett, fellowship single and double, barter, loss and gain, interest simple and compound, rebate or discount. Exchange of coin, vulgar fractions, extraction of the square and cube roots, measuring of board, glazing, wainscot, painting, timber, stone, &c. Enter'd in the hall-book of the Company of Stationers, according to act of Parliament. The third edition. By Humphry Johnson. Writing most in Old Bedlam Court without Bishopsgate, where youth may be boarded.