The young arithmetician's assistant, [electronic resource] : or, the scholar's companion; being an abridgment of The tutor's guide. In four parts. I. Arithmetic, comprehending the most useful and familiar Rules. II. Vulgar Fractions in all their Parts. III. Decimal Fractions, with the Extraction of the Square and Cube Root. To which are added, Rules, for the easy Calculation of Interest, Annuities, &c. IV. Mensuration of Supersicies and Solids, applied to the Measuring Artificer's Work, &c. To Which Are Added, Different Forms of Acquittances, Promissory Notes, Bills of Exchange, Bills of Parcels, &c. The whole designed for the use of schools in general, containing every Rule necessary for Young Gentlemen inteded for Trade, &c. By Charles Vyse, Author of the Tutor's Guide, &c. &c. &c.