Arithmetic, both in the theory and practice, [electronic resource] : Made plain and easy in all the common and useful rules, both in whole numbers and fractions, vulgar and decimal: also interest simple and compound, and annuities. Likewise extraction of the square and cube roots. Together with arithmetical and geometrical progression, and the combination and election, permutation and composition of numbers and quantities. With the addition of several algebraical questions. By John Hill, gent. With a preface, by H. Ditton, gent.