# Modern arithmetic. [With] Key, Book 1

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### Contents

 NOTATION AND NUMERATION 1 SIMPLE SUBTRACTION 7 SUPPLEMENT TO SIMPLE MULTIPLICATION AND DIVISION 16 REDUCTION 25 COMPOUND SUBTRACTION 31 SUPPLEMENT TO COMPOUND MULTIPLICATION AND DivisioN 38 MISCELLANEOUS EXERCISES 47 PROPORTION 53
 TRUE DISCOUNT 135 VTILE DISCOUNT 142 COMPOUND DISTRIBUTIVE PROPORTION 144 AVERAGES 153 EXCHANGE 160 RECTANGULAR AREAS 166 DUODECIMALS 172 CUBE Root 183

### Popular passages

Page 22 - OF TIME. 60 Seconds = 1 Minute 60 Minutes = 1 Hour 24 Hours = 1 Day 7 Days = 1 Week 28 Days = 1 Lunar Month...
Page 20 - Square Measure. 144 square inches 1 square foot, 9 square feet 1 square yard, 30J square yards 1 square rod, 40 square rods 1 rood, 4 roods 1 acre.
Page 215 - If twelve men can dig a trench 15 yards long and 4 broad in 3 days of 12 hours each, in how many days of 9 hours each can 8 men dig a trench 20 yards long and 8 broad.?
Page 68 - An Improper Fraction is one whose numerator is equal to, or greater than, the denominator; as, f, f.
Page 21 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
Page 156 - Multiply each payment by the time at which it is due; then divide the sum of the products by the sum of the payments, and the quotient will be the equated time, or that required.
Page 21 - Dry Measure. — 2 pints = 1 quart; 8 quarts = 1 peck; 4 pecks = 1 bushel.
Page 21 - Measure) 4 gills = 1 pint 2 pints = 1 quart 2 quarts = 1 pottle 2 pottles = 1 gallon 4 quarts = 1 gallon 2 gallons = 1 peck 4 pecks = 1 bushel 8 bushels = 1 quarter...
Page 199 - A post is one fourth of its length in the mud, one third in the water, and 10 feet above the water, what is its whole length? Ans. 24 feet.
Page 217 - A person invests 9,075/. in the 3 per cents at 90|, and on their rising to 91 transfers it to the 3£ per cents at 93| ; how is his annual income affected ? 28.