A Practical Arithmetic: Upon the Basis of the Works of Geo. R. Perkins

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D. Appleton, 1872 - 336 páginas
 

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Página 156 - Thirty days hath September, April, June, and November ; All the rest have thirty-one, Except the second month alone, Which has but twenty-eight, in fine, Till leap year gives it twenty-nine.
Página 94 - Then multiply the numerators together for a new numerator, and the denominators for a new denominator.
Página 153 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Página 110 - RULE. Divide as in whole numbers, and from the right hand of the quotient point off as many places for decimals as the decimal places in the dividend exceed those in the divisor.
Página 275 - A Compound Ratio is the product of two or more simple ratios, the first term being the product of the antecedents, the second that of the consequents.
Página 305 - Which proves that the square of a number composed of tens and units, contains the square of the tens plus twice the product of the tens by the units, plus the square of the units.
Página 43 - Write the multiplier under the multiplicand, units under units, tens under tens, &c.
Página 311 - RULE. 1. Separate the given number into periods of three figures each, beginning at the units place.
Página 135 - 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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