# Robinson's Progressive Practical Arithmetic: Containing the Theory of Numbers, in Connection with Concise Analytic and Synthetic Methods of Solution, and Designed as a Complete Text-book on this Science, for Common Schools and Academies

Ivison, Blakeman, Taylor & Company, 1877 - Arithmetic - 359 pages
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### Contents

 SIMPLE NUMBERS 8 ADDITION 20 SUBTRACTION 28 MULTIPLICATION 35 CONTRACTIONS 42 GENERAL PRINCIPLES OF DIVISION 64 REDUCTION OF DECIMALS 86 REDUCTION 89
 LONG MEASURE 158 SURVEYORS SQUARE MEASURE 164 CUSTOMHOUSE BUSINESS 174 DEFINITIONS 205 COMMISSION AND BROKERAGE 212 PARTIAL PAYMENTS OR INDORSE 216 GOLD INVESTMENTS 225 INSURANCE 233 ANALYSIS 294

 DECIMAL CURRENCY 97 MULTIPLICATION OF FRACTIONS 104 DIVISION OF FRACTIONS 110 MULTIPLICATION OF DECIMALS 116 DIVISION OF DECIMAL CURRENCY 137 ARTICLES SOLD BY THE 143 DEFINITIONS 151
 ALLIGATION MEDIAL 307 ARITHMETICAL PROGRESSION 328 PROMISCUOUS EXAMPLES 334 MENSURATION 342 240 352 Copyright

### Popular passages

Page 48 - Division is the process of finding how many times one number is contained in another.
Page 161 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Page 73 - The Greatest Common Divisor of two or more numbers is the greatest number that will exactly divide each of them.
Page 89 - To reduce fractions to their lowest terms. A fraction is in its lowest terms when its numerator and denominator are prime to each other ; that is, when both terms have no common divisor. 1. Reduce the fraction -f� to its lowest terms.
Page 326 - Multiply the divisor, thus augmented, by the last figure of the root, and subtract the product from the dividend, and to the remainder bring down the next period for a new dividend.
Page 52 - If any partial dividend will not contain the divisor, place a cipher in the quotient, and bring down the next figure of the dividend, and divide as before.
Page 173 - Ans. 6� 37'. 208. IN COUNTING. 12 Units or Things make 1 Dozen. 12 Dozen " 1 Gross. 12 Gross " 1 Great Gross. 20 Units " 1 Score. 209. PAPEE. 24 Sheets. '. make 1 Quire. 20 Quires " 1 Ream. 2 Reams " 1 Bundle. 5 Bundles
Page 282 - Three numbers may be in proportion when the first is to the second as the second is to the third.
Page 49 - Rule. — I. Write the divisor at the left of the dividend, with a line between them.
Page 153 - 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