A system of arithmetic, with the principles of logarithms

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Page 50 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.
Page 83 - Reduce compound fractions to simple ones, and mixt numbers to improper fractions ; then multiply the numerators together for a new numerator, and the denominators for. a new denominator.
Page 30 - Thirty Days hath September, April, June and November ; February hath Twenty-eight alone, And all the rest have Thirty-one ; Except in Leap Year, — then's the time February's Days are Twenty-nine.
Page 72 - Rule. — Divide the numerator by the denominator, the quotient will be the whole number...
Page 60 - If a footman travel 130 miles in 3 days, when the days are 12 hours long ; in how many days, of 10 hours each, may he travel 360 miles ? Ans. 9|f days. 5. If 120 bushels of corn can serve 14 horses 56 days, how many days will 94 bushels serve 6 horses?
Page 25 - Square Measure is used in measuring surfaces, as of land, boards, plastering, etc. The denominations are square inches, square feet, square yards, square rods, and square miles. 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.
Page 129 - Half the Product of the common Difference, multiplied by the Number of Terms less one, gives*the first Term.
Page 74 - To reduce fractions of different denominators to equivalent fractions, having a common denominator. RULE. — Multiply each numerator into all the denominators except its own for the new numerators ; and multiply all the denominators together for a common denominator.
Page 98 - Sir," said I, after puzzling a long time over "more requiring more and less requiring less" — "will you tell me why I sometimes multiply the second and third terms together and divide by the first — and at other times multiply the first and second and divide by the third?" "Why, because more requires more sometimes, and sometimes it requires less — to be sure. Haven't you read the rule, my boy?" " Yes, sir, I can repeat the rule, but I don't understand it.
Page 3 - Roman notation employs seven capital letters, viz. : I, for one ; V, for five ; X, for ten ; L, for fifty ; C, for one hundred ; D, for five hundred ; M, for one thousand. The...

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