Decimal arithmetic made perfect [electronic resource] : or, the management of infinite decimals displayed. Being the Whole Doctrine of the Arithmetic of Circulating Numbers, explained by many New and Curious Examples in Addition, Substraction, &c. Of all which the last Age was entirely ignorant, but now made Easy and Familiar to the meanest Capacity. With proper Demonstrations to illustrate the Whole; in a Manner hitherto Unattempted, or at least not Published by any Author. To which is prefixed, an historical introduction, shewing the Progress and Improvements made therein by its several Authors, from the very First Attempt down to the Present Time. With large tables annexed to compleat the Whole. And an appendix, Containing The Arithmetic of the Five Primary Rules in Decimal Fractions, as commonly Taught. By John Marsh, Writing-Master, and Accomptant, in the City of Sarum.