# A Practical Arithmetic

Ginn, 1881 - 351 σελίδες

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### Περιεχόμενα

 NUMBERS i 1 DECIMAL FRACTIONS 6 ADDITION 13 APPLICATIONS OF ADDITION AND SUBTRACTION 27 MULTIPLICATION 30 DIVISION 45 MISCELLANEOUS EXERCISES 58 METRIC MEASURES 70
 PERCENTAGE 210 INTEREST AND DISCOUNT 232 STOCKS 253 EXCHANGE 260 AVERAGES 265 POWERS AND Roots 273 LOGARITHMS 287 APPROXIMATIONS 302 30 302

 MULTIPLES AND MEASURES OF NUMBERS 106 COMMON FRACTIONS 120 PROBLEMS 178 METRIC AND COMMON MEASURES 200 PROPORTION 204
 PROGRESSIONS 308 MISCELLANEOUS EXERCISES 318 178 340 273 18

### Δημοφιλή αποσπάσματα

Σελίδα 155 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints — 1 quart (qt...
Σελίδα 162 - Numbers. 12 units = 1 dozen. 12 dozen = 1 gross. 12 gross = 1 great gross. 20 units = 1 score. Paper. 24 sheets = 1 quire. 20 quires = 1 ream. 2 reams = 1 bundle. 5 bundles = 1 bale.
Σελίδα 265 - Sixty days after sight of this first of Exchange (Second and Third of the same tenor and date unpaid...
Σελίδα 154 - CUBIC MEASURE 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Σελίδα 109 - A number is divisible by 3 if the sum of its digits is divisible by 3.
Σελίδα 279 - The sum of two numbers multiplied by their difference, is equal to the difference of their squares.
Σελίδα 157 - TIME 60 seconds (sec.) = 1 minute (min.) 60 minutes = 1 hour (hr.) 24 hours = 1 day (da.) 7 days = 1 week (wk.) 365 days = 1 common year (yr.) 366 days = 1 leap year About 30 days = 1 month (mo.) 12 months = 1 year VALUE 10 cents (ct.
Σελίδα 293 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Σελίδα 292 - The logarithm of a product is the sum of the logarithms of the factors.
Σελίδα 153 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq.