The young man's best companion : Being new arithmetic in two parts. I. Shews, how a person may speedily learn (without the help of a master) numeration, addition, subtraction, multiplication, division, reduction, the rule of three, the rule of proportion, the rule of fellowship, allegation, false position. II. Vulgar fractions, reduction of vulgar fractions; addition, subtraction, multiplication, and division of vulgar fractions; of decimal fractions, reduction of vulgar fractions to decimal, addition and subtraction, multiplication and division of decimals, the rule of three in fractions; of simple interest, of compound interest, practical questions of barer, loss, gain exchange of coin, &c. Rules of practice, with divers curious recreative questions for the exercise of arithmetic. Also an appendix, containing compendious ways of subtraction, multiplication and division; with several entertaining sports and pastimes. By S. Lowe, schoolmaster.