A system of arithmetic, with the principles of logarithms

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Σελίδα 17 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30j square yards = 1 square rod (sq.
Σελίδα 49 - 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.
Σελίδα 82 - 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.
Σελίδα 20 - 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.
Σελίδα 71 - Rule. — Divide the numerator by the denominator, the quotient will be the whole number...
Σελίδα 59 - 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?
Σελίδα 128 - Half the Product of the common Difference, multiplied by the Number of Terms less one, gives*the first Term.
Σελίδα 97 - 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.
Σελίδα 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...
Σελίδα 130 - ... number of terms, the product of the extremes is equal to the product of any two...

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