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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.
Fish's Arithmetic Number Two: Oral and Written, Upon the Inductive Method - Page 270
by Daniel W. Fish - 1883 - 352 pages

## The Progressive Higher Arithmetic: For Schools, Academies, and Mercantile ...

Horatio Nelson Robinson - Arithmetic - 1875 - 486 pages
...Thus, XI represents eleven, LX sixty, DC six hundred. 3d. If a Jetter of any value be placed be/on; 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...

## The Junior-class Arithmetic: Oral and Written : Designed for Graded Schools

Daniel W. Fish - Arithmetic - 1875 - 350 pages
...value is to be added to that of the greater. Thus, VI represents 6 ; XV, 15 ; LXX, 70 ; DC, 600. 3. When a letter is placed before one of greater value, its value is taken from that of the greater. Thus, IV represents 4 ; XL, 40 ; CD, 400. 4. A bar ( — ) placed over...

## Written Arithmetic

George Augustus Walton - 1876 - 358 pages
...(1.) When a letter is repented, its value is repeated. (2.) "When a letter is placed before another of greater value, its 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...

## The Rudiments of Written Arithmetic: Containing Slate and Black-board ...

Horatio Nelson Robinson - Arithmetic - 1877 - 212 pages
...the greater. 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...

## The Practical Arithmetic on the Inductive Plan: Including Oral and Written ...

William James Milne - Arithmetic - 1877 - 402 pages
...\$300.416 \$200.204 \$69.69 \$75.25 NOTATION AND NUMERATION. 2. When a letter is placed before another of greater value its value is to be 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....

## The Elements of Arithmetic, Oral and Written: Designed for Pupils in the ...

Horatio Nelson Robinson - Arithmetic - 1877 - 250 pages
...value is to be added to that of the greater. Thus, VI represents 6 ; XV, 15 ; LXX, 70 ; DC, COO. 4- When a letter is placed before one of greater value, its value is taken from that of the greater. Thus, IV represents 4; IX, 9; XL, 40. 5. When a letter of any value...

## The Progressive Higher Arithmetic: For Schools, Academies, and Mercantile ...

Horatio Nelson Robinson - Arithmetic - 1875 - 470 pages
...the greater. 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...

## National Arithmetic; Oral and Written: For Common and Graded Schools ...

Joseph Ficklin - Arithmetic - 1881 - 412 pages
...represents 3; XXX, 30; CCC, 300, etc. 2. A letter of less value placed before one of greater takes its value from that of the greater. Thus, IV represents 4 ; IX, 9 ; XL, 40, etc. 3. A letter of less value placed after one of greater adds its value to that of the greater. Thus,...