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ROMAN NUMERALS

Roman Numerals
by

Jessica Tamez

on 21 August 2013

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Transcript of ROMAN NUMERALS

ROMAN NUMERALS
HISTORY
ROMAN NUMERALS were the numeric system used in ancient Rome that used a combination of letters from the Latin alphabet to signify values.
Replacing Roman Numerals
Roman numerals remained in common use until about the 14th century, when they were replaced by Hindu–Arabic numerals around the 11th century.

Use of Roman Numerals Today
How to write Roman Numerals
To make Roman numerals, we use seven letters from the alphabet. The letters, which are always capitalized, are I, V, X, L,C,D, and M. The table below shows you the value for each of these numerals.
Examples
M CM XL V
1000 + 900 + 40 + 5 = 1945
Classwork
The history of Roman numerals follows the history of ancient Rome itself, from its beginnings at the Latin Palatine Hill in 8th and 9th century B.C. to it's fall in the 2nd Century AD.
The use of Roman Numerals was not completely replaced. They were considered an elegant way to express numbers and were used on solemn occasions.
Roman numerals are still used today in several contexts. A few examples of their current use are:

• Names of monarchs and Popes.
• Generational suffixes for people who share the same name across generations (especially males).
• The year of production of films, television shows and other works of art
• Hour marks on watches and clocks
• The year of construction on building faces and cornerstones.
• Page numbering of prefaces and introductions of books.
• Book volume and chapter numbers.
• Sequels of movies, video games, and other works.
• Outlines.


Roman numerals are arranged and combined in a specific order to represent numbers.

Numerals (their values) are added together when written in groups, so XX = 20 (because 10+10 = 20). However, you cannot put more than three of the same numerals together.
Numeral I can be placed before V and X to make 4 units (IV) and 9 units (IX) respectively
X can be placed before L and C to make 40 (XL) and 90 (XC) respectively
C can be placed before D and M to make 400 (CD) and 900 (CM) respectively
1 5 10 50
I V X L


100 500 1000
C D M
CCIX
209

2310
XXCCCX
1 5 10 50 100 500 1000
I V X L C D M
Write the Roman Numerals from 1 to 20
Write the numbers from 20 to 100 by tens.
Homework
1. DLXXVI
2. MMCMLVI
3. MCCXXXVII
4. MMMDCCXXVII
5. DCXXXV
6. MMCCXXIX
7. MMDCCCXLVI
8. MDXCVII
9. 1616
10. 753
11. 1907
12. 3693
13. 93
14. 2049
15. 2310
16. 450
17. DCCCXXXIII
18. 2911
19. MMMCCV
20. DCCXIX
21. 700
22. 2234
23. MCVI
24. 562
25. 2799
26. CCXXXIV
Full transcript