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" Number. 12 units — 1 dozen (doz.). 12 dozen = 1 gross (gro.). 12 gross =• 1 great gross. 20 units — 1 score. "
Standard Elementary Arithmetic: Combining Oral and Written Exercises - Page 166
by Edward Sylvester Ellis - 1886 - 192 pages
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An Introductory Arithmetic

David Martin Sensenig - 1906 - 278 pages
...PAPER. 24 sheets = 1 quire. 20 quires = 1 ream. 2 reams = 1 bundle. 5 bundles = 1 bale. 441. COUNTING. 12 units = 1 dozen (doz.). 12 dozen = 1 gross (gro.). 12 gross = 1 grpat gross (G. gro.). 20 units = 1 score. 442. Oral Exercise. /. How many units are there in 6 doz.?...
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New Commercial Arithmetic

John Henry Moore - Business mathematics - 1907 - 424 pages
...equator contains 60 geographic miles, or 69} statute miles. MISCELLANEOUS MEASURES ENUMERATION TAHLK 12 units = 1 dozen (doz.). 12 dozen = 1 gross (gro.). 12 gross = 1 great gross (gt. gro.). gt. gro. gro. doz. units. 1 = 12 = 144 = 1728. Two units are often called a pair, and 20...
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School Arithmetic for Grammar Grades

Samuel Hamilton - Arithmetic - 1907 - 422 pages
...= 1 dram — dr. or 3 8 drams = 1 ounce — oz. or § 12 ounces = 1 Ib. or Ib Counting 12 things = 1 dozen (doz.) 12 dozen = 1 gross (gro.) 12 gross = 1 great gross 20 things = 1 score. Apothecaries' Liquid Measures This is used only in filling medical prescriptions....
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Practical Exercises in Commercial Arithmetic

Charles E. Sayward - Business mathematics - 1908 - 188 pages
.... . 31 " MISCELLANEOUS. 263. Some articles are counted by the following TABLE. 12 Units or Things = 1 Dozen . . . Doz. 12 Dozen = 1 Gross . . . G-ro. 12 Gross = 1 Great Gross . G-. Or, 20 Units or Things = 1 Score 264. Paper is measured by the following TABLE. 24 Sheets = 1...
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Complete Arithmetic

Samuel Hamilton - Arithmetic - 1908 - 512 pages
...= 1 drain — dr. or 3 8 drams = 1 ounce — oz. or J 12 ounces = 1 Ib. or Ib Counting 12 things = 1 dozen (doz.) 12 dozen = 1 gross (gro.) 12 gross = 1 great gross 20 things = 1 score. Apothecaries' Liquid Measures This is used only in filling medical prescriptions....
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The Appleton Arithmetics, Book 3

Jacob William Albert Young, Lambert Lincoln Jackson - Arithmetic - 1909 - 292 pages
...days or 12 months (mo.) = 1 year (yr.) 10 years = 1 decade 10 decades = 1 century Table of Counting 12 units = 1 dozen (doz.) 12 dozen = 1 gross (gro.) 12 gross = 1 great gross (gt. gro.) 24 sheets of paper = 1 quire 20 quires, or 480 sheets, — 1 ream Avoirdupois Weight 7,000...
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A Practical Arithmetic

Frank Lincoln Stevens, Tait Butler, Adeline T. Chapman Stevens, Mrs. F. L. Stevens - Arithmetic - 1909 - 420 pages
...1 fluid ounce (f 3 ) 16 fluid ounces = 1 pint (O.) 8 pints = 1 gallon (cong.) COUNTING 12 things = 1 dozen (doz.) 12 dozen = 1 gross (gro.) 12 gross = 1 great gross (G. gr.) 24 sheets (paper) = 1 quire 20 quires, or 480 sheets = 1 ream TIME 60 seconds (sees.) = 1...
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The Gilbert Arithmetics, Book 2, Parts 1-2

Charles H. Gleason - Arithmetic - 1910 - 536 pages
...in 2,500 Ib.? In 3,000 Ib.? In 8,000 Ib.? In 4,500 Ib.? In 9,000 Ib.? 269. MEASURES USED IN COUNTING 12 units = 1 dozen (doz.) 12 dozen = 1 gross (gro.) 12 gross = 1 great gross (gt. gro.) 20 units ;-- 1 score 24 sheets of paper = 1 quire 20 quires (480 sheets) = 1 ream ORAL EXERCISES...
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An Exercise Book in Arithmetic: Oral and Written

Gordon Augustus Southworth, John Charles Stone - Arithmetic - 1910 - 176 pages
...and proceed as before until all the groups have been used. TABLES OF [FOR REF Counting. 12 things = 1 dozen (doz.) 12 dozen = 1 gross (gro.) 12 gross = 1 great gross (g. gr.) 20 things = 1 score 24 sheets (paper) = 1 quire 20 quires or i ream 480 sheets J Time. 60...
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An Exercise Book in Arithmetic, Oral and Written: For Supplementary Or ...

Gordon Augustus Southworth, John Charles Stone - Arithmetic - 1910 - 188 pages
...before until all the groups have been used. via TABLES OF MEASURES [FOB REFERENCE] Counting. 12 things = 1 dozen (doz.) 12 dozen = 1 gross (gro.) 12 gross = 1 great gross (g. gr.) 20 things = 1 score 24 sheets (paper) = 1 quire 20 quires or 480 sheets = 1 ream Time. 60...
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