Answer:
The Dewey Decimal System is a topic ordering system that allows nonfiction books to be added to a library in their appropriate location.
It has 10 call number classifications:
- 000 - General Information and Computer Science
- 100 - Philosophy & Psychology
- 200 - Religion
- 300 - Social Sciences
- 400 - Language
- 500 - Science
- 600 - Technology
- 700 - Arts & Recreation
- 800 - Literature
- 900 - History & Geography
The reason that it is called a decimal system is because a decimal is used to specify sub-topics. For example:
- 006.3 - Artificial Intelligence
- 335.6 - Fascism
- 641.4 - Food preservation and storage