New Rudiments of Arithmetic: Combining Mental and Slate Exercises for Intermediate Departments

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Clark & Maynard, 1872 - Arithmetic - 224 pages
 

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Page 161 - 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
Page 86 - The least common multiple of two or more numbers, is the least number which can be divided by each of them without a remainder. Thus, 12 is...
Page 62 - DIVISION is finding how many times one number is contained in another.
Page 71 - Then multiply the divisor by this figure and subtract the product from the figures divided; to the right of the remainder bring down the next figure of the dividend and divide this number as before.
Page 83 - The Greatest Common Divisor of two or more numbers is the greatest number that will exactly divide each of them. Thu4, 18 is the greatest, common divisor of 36 and 54, since it is the greatest number that will divide each of them without a remainder.
Page 170 - Time. 60 seconds (S.) make 1 minute, marked M. 60 minutes, 1 hour, h. 24 hours, 1 day, d. 7 days, . 1 week, w. 4 weeks, 1 month, mo. 13 months, 1 day and 6 hours, 1 Julian year, yr. Thirty days hath September, April, June and November ; February twenty-eight alone, all the rest have thirtyone.
Page 92 - An Improper Fraction is one whose numerator is equal to, or greater than, the denominator; as, f, f.
Page 162 - Weight This is used to. some extent in filling prescriptions. The grain, ounce, and pound are the same as in troy weight, but the ounce is divided differently. 20 grains (gr.) = 1 scruple . . . sc. or 3 3 scruples = 1 dram . . . dr. or 3 8 drams = 1 ounce . . . oz. or 5 12 ounces = 1 pound . . . Ib. or ft Apothecaries...
Page 74 - Divide the remaining part of the dividend by the remaining part of the divisor. III. Prefix the remainder to the part of the dividend cut off, and the result will be the true remainder.
Page 99 - To reduce a mixed number to an improper fraction. Multiply the whole number by the denominator of the fraction, and to the product add the given numerator.

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