TO BE USED IN STUDYING VULGAR FRACTIONS. In using the Fractional Plate, the student must count the white spaces, and not the black lines. The first row of squares, or white spaces, at the top, are whole numbers; the second row is divided into halves; the third, into thirds, and so on from the top to the bottom. Thus it may be shown at one glance, that halves make three and a half, or that & thirds make 2 and 2 thirds, &c. CONTENTS. PAGE. 7 - Numeration, Simple Division, Federal Money, Tables of Money, Weights, Measures, &c., Compound Subtraction, Compound Multiplication, Compound Division, Exchange, Vulgar Fractions, Decimal Fractions, Duodecimals, Single Rule of Three, Double Rule of Three, Fellowship, Tare and Tret, 101 105 111 113 121 123 126 127 Compound Interest, Insurance, Commission and Brokerage, 134 135 136 Discount, 137 Equation, 138 Loss and Gain, 139 Involution, 140 Cube Root, Biquarate Root, 145 146 Alligation, 149 Position, Double Position, 151 Arithmetical Progression, 153 Geometrical Progression, 155 158 ib. 164 |