WHOLE NUMBERS
CONTENT- Development of number system
- Place values
- Counting: tens; hundreds; thousands; millions;…trillions
- Translating numbers written in figures to words
- Quantitative reasoning
Development of Number System
There were many ancient ways of writing numbers part of which are the Hindu Arabic system, tally system, Roman system, etc. While so many have gone into extinction, the Roman system is still in use up to date.The Roman Number System
The Roman number system was developed about 300BC. The Romans used capital letters of the alphabet for numerals. The tables below show how to use the letters.1 | I | 11 | XI | 30 | XXX | 500 | D | ||||
2 | II | 12 | XII | 40 | XL | 600 | DC | ||||
3 | III | 13 | XIII | 50 | L | 700 | DCC | ||||
4 | IV | 14 | XIV | 60 | LX | 800 | DCCC | ||||
5 | V | 15 | XV | 70 | LXX | 900 | CM | ||||
6 | VI | 16 | XVI | 80 | LXXX | 1,000 | M | ||||
7 | VII | 17 | XVII | 90 | XC | 2,000 | MM | ||||
8 | VIII | 18 | XVIII | 100 | C | 3,000 | MMM | ||||
9 | IX | 19 | XIX | 200 | CC | 4,000 | MV | ||||
10 | X | 20 | XX | 300 | CCC | 5,000 | V | ||||
400 | CD | 10,000 | X |
What are whole numbers?
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