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" When a letter is placed before another of greater value, its value is to be taken from that of the greater. Thus, IX represents nine, XL forty, CD four hundred. "
Elements of Arithmetic: For Primary and Intermediate Classes in Public and ... - Page 85
by William James Milne - 1893 - 240 pages
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The Progressive Practical Arithmetic: Containing the Theory of Numbers, in ...

Horatio Nelson Robinson - Arithmetic - 1859 - 362 pages
...Thus, XI represents eleven, LX sixty, DC six hundred. 3d. 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. Define notation. Numeration. What systems of notation...
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The Progressive Higher Arithmetic, for Schools, Academies, and Mercantile ...

Horatio Nelson Robinson - Arithmetic - 1860 - 444 pages
...Thus, XI represents eleven, LX sixty, DC six hundred. 3d. 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. 4th. If a letter of any value be placed between two...
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A Written Arithmetic, for Common and High Schools: To which is Adapted a ...

George Augustus Walton - Arithmetic - 1864 - 364 pages
...the following principles being observed : — (1.) When a letter is repeated, its value is repeated. (2.) "When a letter is placed before another of greater...value is to be taken from that of the greater; thus, IV denotes four. (3.) When a letter is placed after another of greater value, its value is to be added...
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A Written Arithmetic, for Common and High Schools: To which is Adapted a ...

George Augustus Walton - Arithmetic - 1864 - 376 pages
...the following principles being observed : — (1.) When a letter is repeated, its value is repeated. (2.) When a letter is placed before another of greater...value is to be taken from that of the greater; thus, IV denotes four. (3.) When a letter is placed after another of greater value, its value is to be added...
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The Rudiments of Written Arithmetic: Containing Slate and Black-board ...

Horatio Nelson Robinson - Arithmetic - 1866 - 200 pages
...value is to be united to that of the greater. Thus, XI represents eleven, LX sixty, DC six hundred. value, its value is to be taken from that of the greater. Thus, IX represents nine, XL forty, CD four hundred. 4th. If a letter of any value be placed between two...
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The High School Arithmetic: Containig All the Matter Usually Presented in a ...

Philotus Dean - Arithmetic - 1874 - 472 pages
...letter repeats its value. V, L, and D are not repeated. 2o. If a letter be placed at the left of one of greater value, its value is to be taken from that of the greater. Thus, IV denotes four, IX nine, XL forty. 3o. If a letter be placed at the right of one of greater value,...
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Written Arithmetic

George Augustus Walton - 1876 - 358 pages
...the following principles being observed : — (1.) When a letter is repented, its value is repeated. (2.) "When a letter is placed before another of greater...value is to be taken from that of the greater; thus, IV denotes four. (3.) When a letter is placed after another of greater value, its value is to be added...
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The Practical Arithmetic on the Inductive Plan: Including Oral and Written ...

William James Milne - Arithmetic - 1877 - 402 pages
...$211.12 $216.16 $12.056 $20.20 $606.952 $7000.16 $300.416 $200.204 $69.69 $75.25 NOTATION AND NUMERATION. 2. When a letter is placed before another of greater...taken from that of the greater. Thus, I represents one and V five, but IV represents four; IX, nine; XIX, nineteen; XL, forty; XC, ninety. 3. When a letter...
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The Rudiments of Written Arithmetic: Containing Slate and Black-board ...

Horatio Nelson Robinson - Arithmetic - 1877 - 212 pages
...Thus, XI represents eleven, LX sixty, DC six hundred. 3d. 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. 4th. If a letter of any value be placed between two...
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The Practical Arithmetic on the Inductive Plan: Including Oral and Written ...

William James Milne - Arithmetic - 1878 - 406 pages
...$211.12 $216.16 $12.056 $20.20 $606.952 $7000.16 $300.416 $200.204 $69.69 $75.25 DOTATION AND NUMERATION. 2. When a letter is placed before another of greater value its valite is to be taken from that of the greater. Thus, I represents one and V five, but IV represents...
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