The Principles and Practice of Arithmetic: Comprising the Nature and Use of Logarithms, with the Computations Employed by Artificers, Gagers and Land-surveyors. Designed for the Use of Students

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J.W. Parker, 1840 - Arithmetic - 224 pages

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Page 52 - If the numerator and denominator of each fraction is multiplied (or divided) by the same number, the value of the fraction will not change.
Page xiv - Digits, which have their names respectively annexed: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0: one, two, three, four, five, six, seven, eight, nine, zero...
Page xi - COUNTING. 12 units or things make 1 dozen. 12 dozen " 1 gross. 12 gross " 1 great gross. 20 units
Page 135 - A and B can do a piece of work in 10 days, A and C in 12 days, and B and C in 14 days ; in what time can they do it jointly and separately?
Page 6 - Set down the multiplicand, and under it the multiplier, in such a manner, units may stand under units, tens under tens, hundreds under hundreds, and so on.
Page 95 - ... a number consisting of as many nines as there are recurring figures followed by as many ciphers as there are non-recurring figures.
Page 106 - If 3 men can do a piece of work in 12 days, how many days will it take 9 men to do the same ? ANALYSIS.
Page 109 - If 20 men can perform a piece of work in 12 days, how many men will accomplish three times as much in one-fifth of the time ? Ans.
Page 135 - A and B together can build a boat in 18 days, and •with the assistance of C they can do it in 11 days ; in what time would C do it alone ? Ans.
Page 77 - How many were therein the army? — how many killed ? — how many taken prisoners ? A. 2,400 ; 800 killed ; 600 prisoners. 48. A can do a job of work in 5 days, B in 6, and C in 7 ; how much can they jointly do in 2 days 1 A.

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