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

D. Appleton, 1872 - 336 σελίδες

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### Περιεχόμενα

 NUMBERs 8 NUMERATION 16 CHAP W SUBTRACTION 30 MULTIPLICATION 38 Division 48 Prime Factors 72 GREATEST Common 80 DECIMAL FRACTIONs 103
 Discount 233 Commission BRO 240 BANKRUPTCY 255 DUTIES 264 RATIo 274 ANALYsis 281 Exchange 287 PARTNERSHIP 294

 CHAP XVI 175 DUoBECIMALs 188 PERCENTAGE 194 INTEREST 205 NoTEs PARTIAL 223
 INvolution 302 ProgREssion 313 ANNUITIES 321 Miscellaneous Examples 330

### Δημοφιλή αποσπάσματα

Σελίδα 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.
Σελίδα 94 - Then multiply the numerators together for a new numerator, and the denominators for a new denominator.
Σελίδα 153 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 43 - Write the multiplier under the multiplicand, units under units, tens under tens, &c.
Σελίδα 311 - RULE. 1. Separate the given number into periods of three figures each, beginning at the units place.
Σελίδα 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