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

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

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