 | William James Milne - Arithmetic - 1906 - 364 pages
...united. Thus, II represents 2 ; XXX, 30 ; VI, 6 ; DC, 600. 2. When a letter is followed by a letter of greater value, its value is to be taken from that...the greater. Thus, IV represents 4 ; IX, 9 ; XL, 40 ; CD, 400. 3. A letter with a bar placed over it represents a thousand times as much as it does without... | |
 | Orville Marcellus Powers - Business mathematics - 1906 - 384 pages
...be added to that of the greater. Thus, VI represents 6 ; XV, 15 ; XXI, 21 ; DC, 600 ; DCX, 610. 3. When a letter is placed before one of greater value, its value is to be taken from the greater. Thus, IX represents 9 ; XL, 40 ; XC, 90 ; CD, 400. 4. When a letter of any value is' placed... | |
 | Orville Marcellus Powers - Business mathematics - 1906 - 384 pages
...is to be added to that of the greater. Thus, VI represents 6; XV, 15; XXI, 21; DC, 600; DCX, 610. 3. When a letter is placed before one of greater value, its value is to be taken from the greater. NEW BUSINESS ARITHMETIC 4. When a letter of any value is placed between two letters, each... | |
 | William James Milne - Arithmetic - 1907 - 616 pages
...be united. Thus, II represents 2; XXX, 30; VI, 6; DC, 600. 2. When a letter is followed by a letter of greater value, its value is to be taken from that...the greater. Thus, IV represents 4 ; IX, 9 ; XL, 40 ; CD, 400. 3. A letter with a bar placed over it represents a thousand times as much as it does without... | |
 | Charles H. Gleason, Charles Benajah Gilbert - Arithmetic - 1910 - 288 pages
...represents 2; VI, 6 ; XXX, 30; XV, 15; LX, 60 ; CX, 110; DC, 600. (2) When a letter is followed by a letter of greater value, its value is to be taken from that...the greater. Thus, IV represents 4; IX, 9; XL, 40; XC,90; CD, 400; CM, 900. (3) Placing a dash over a letter multiplies its value by 1,000. Thus, V represents... | |
 | DeForest A. Preston, Edward Lawrence Stevens - Arithmetic - 1910 - 380 pages
...notation is based upon four principles as follows: 1. Repeating a letter, repeats its value. 2. If a letter is placed before one of greater value, its value is to be taken from the value of the greater. 4. If a letter is placed between two letters, each of greater value, its... | |
 | William James Milne - Arithmetic - 1914 - 524 pages
...10 + 2, or 12. 2. When a letter is followed by a letter of greater value, the value of the less is taken from that of the greater. Thus, IV represents 4; IX, 9; XL, 40; CD, 400. Just as XII stands for 10 + 2, or 12, so XIX stands for 10 + 9, or 19. 3. A letter with a... | |
 | William A. Campbell, Thomas Houghton Hughes - Arithmetic - 1917 - 340 pages
...When a letter is placed after one of greater value, its value is added to that of the greater: XI=X+I. When a letter is placed before one of greater value, its value is taken away from that of the greater: IX = XI. 1. Read: IV IX XXV XXXIV L XL LX XLVI XLI XXVII LXXV... | |
 | William Ledley Vosburgh, William Frederick Gentleman - Mathematics - 1917 - 168 pages
...is repeated, its value is repeated; for example, II = 2, XX = 20, XXIII = 23, CCXXII = 222. (2) If a letter is placed before one of greater value, its value is taken from that of the greater; for example, IV = 4, XC = 90, XIX = 19, XL = 40. (3) If a letter is... | |
 | Mechanical engineering - 1915 - 902 pages
...the greater. Thus, XI represents eleven, LX sixty, DC six hundred. (3) If a letter of any value be placed before one of greater value, its value is to be taken from that of the greater. Thus, IX represents nine, XL forty, CD four hundred. (4) If a letter of any value be placed between two letters,... | |
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If a letter is placed after one of greater value, its value is to be added to that of the greater. Thus, XI represents eleven, LX sixty, DC six hundred. 
