# A Practical Arithmetic

C. Scribner's Sons, 1909 - Arithmetic - 386 pages

### Contents

 NOTATION AND NUMERATION 3 ADDITION 12 SUBTRACTION 29 EXERCISE 1 32 MULTIPLICATION 41 DIVISION 57 How many ones in 2 8 62 REVIEW PROBLEMS 74
 MEASUREMENTS 186 PRACTICAL MEASUREMENTS 198 REVIEW PROBLEMS 216 PERCENTAGE 227 COMMON FRACTIONS 228 INTEREST 275 RATIO 302 6387 313

 DIVISORS AND MULTIPLES 86 Tests of Divisibility Greatest Common Divisor Least Com 118 DECIMAL FRACTIONS 135 ACCOUNTS AND BILLS 147 REVIEW PROBLEMS 179
 POWERS 318 MISCELLANEOUS REVIEW PROBLEMS 326 92 340 APPENDIX 367 Copyright

### Popular passages

Page 371 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Page 375 - 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...
Page 160 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Page 86 - A number is divisible by 3 if the sum of its digits is divisible by 3• A number is divisible by 9 if the sum of its digits is divisible by 9.
Page 102 - When a decimal number is to be divided by 10, 100, 1000, &c., remove the decimal point as many places to the left as there are ciphers in the divisor, and if there be not figures enough in the number, prefix ciphers.
Page 158 - 1 Square Chain . sq. ch. 10 Square Chains " 1 Acre A. 640 Acres " 1 Square Mile . . sq. mi. 36 Square Miles (6 miles square)
Page 374 - Weight is used by apothecaries and physicians in compounding dry medicines. TABLE. 20 Grains (gr.} = 1 Scruple, . . sc., or 3. 3 Scruples = 1 Dram, . . dr., or 3 . 8 Drams = 1 Ounce, . . oz., or § . 12 Ounces = 1 Pound, . . Ib., or ft,.
Page 97 - To multiply a decimal by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are ciphers in the multiplier ; and if there be not places enough in the number, annex ciphers.
Page 60 - To divide by 10, 100, &c., is simply cutting off as many figures from the right of the dividend as there are ciphers in the divisor.
Page 374 - APOTHECARIES' FLUID MEASURE 60 minims (lt\,) = 1 fluid dram (f 3) 8 fluid drams = 1 fluid ounce (f 3 ) 16 fluid ounces = 1 pint (O) 8 pints = 1 gallon (cong...