An exact guide to book-keeping by way of debtor and creditor: done after the Italian method. [electronic resource] : Containing I. Decimal arithmetick, in all its parts, made plain and easy: teaching how to apply decimals, in casting up merchants accompts, by a readier method than the common rules now in use. II. Thirty seven cases in domestick trade, and twenty cases in foreign trades, fully explain'd and put in practice. III. Book-keeping, in a very easy and familiar method, whereby any one may make himself capable of keeping accompts, without the instruction of a master. IV. By the help of a computation-book, shewing the true and exact method of entring, posting and closing accompts; never before made publick. V. The whole leidger ballanc'd by art, with a brief rule to apply this general ballance to a new inventory. By Thomas King, accomptant. Examin'd and approv'd by several eminent merchants and tradesmen, both in city and country.