The young arithmetician's guide [electronic resource] : Being a course of practical arithmetick, both vulgar and decimal. Digested after a new concise method. Adapted to the trade of Ireland. To which is added, tables, and their use, for computing the value of leases, and fines to be paid: together with a table and method of estimating the value of annuities upon lives. Fitted for the use of gentleman, farmers, stewards, clerks, &c. By James Parr, and Thomas Walsh