# A Practical Arithmetic: Upon the Basis of the Works of Geo. R. Perkins

D. Appleton, 1872 - Arithmetic - 336 pages
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### Contents

 NOTATION 9 Two systems of notation are used the Arabic 10 NUMERATION 16 11 eleven 12 twelve 13 thirteen 14 fourteen 15 fifteen 16 23 SUBTRACTION 30 twentyseven 28 twentyeight 29 twentynine 31 MULTIPLICATION 38 DIVISION 48
 Long Measure 142 Cubic Measure 148 Time 154 COMPOUND ADDITION 168 CHAP XVI 175 INTEREST 200 NOTES PARTIAL 223 Mercantile Rule 229

 Prime Factors 72 GREATEST COMMON 80 63 95 FEDERAL MONEY 116
 Stocks 240 CHAP XXXV 303 MENSURATION 318 THE METRIC SYSTEM 325

### Popular passages

Page 156 - Thirty days hath September, April, June, and November ; All the rest have thirty-one, Except the second month alone, Which has but twenty-eight, in fine, Till leap year gives it twenty-nine.
Page 94 - Then multiply the numerators together for a new numerator, and the denominators for a new denominator.
Page 153 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Page 110 - RULE. Divide as in whole numbers, and from the right hand of the quotient point off as many places for decimals as the decimal places in the dividend exceed those in the divisor.
Page 275 - A Compound Ratio is the product of two or more simple ratios, the first term being the product of the antecedents, the second that of the consequents.
Page 305 - Which proves that the square of a number composed of tens and units, contains the square of the tens plus twice the product of the tens by the units, plus the square of the units.
Page 43 - Write the multiplier under the multiplicand, units under units, tens under tens, &c.
Page 311 - RULE. 1. Separate the given number into periods of three figures each, beginning at the units place.
Page 135 - TROY WEIGHT. 24 grains (gr.) = 1 pennyweight (pwt.). 20 pennyweights = 1 ounce (oz.). 12 ounces = 1 pound (lb.). 351. Apothecaries' weight is used in mixing medicines and in selling them at retail. APOTHECARIES