1. Homework for Wednesday 9/5 Alphabetia posters due. Be ready to compare and discuss. Read Textbook section 2.3, pp 101-108 Textbook exercises pp.119-120 2b,d,e,g, 3b, 12a,e

2. 2.3 Numeration We take our numeration system for granted but understanding it is key to understanding everything else in mathematics. What are some difficult concepts about numeration?

3. 2. Egyptian Numeration System Earliest know written numbers. Used a combination of these symbols. What is the value of

4. Egyptian Numeration System What are some advantages/disadvantages? What are some patterns that you see?

5. Egyption Numeration System This system is an additive system. The value of a number is the sum of the numerals:is just 1000+1000+1000+ 100 +100 +10 +10+10+10+1+1+1+1

6. Roman Numeration System What do you remember about this system?

7. 3.Roman Numeration System Represent 419 using the Roman numerals.

8. What are some differences between this system and the Egyptian system? What are some of the advantages and disadvantages of each.

9. 4. Babylonian Numeration System 1 is represented by: 10 is represented by. Example: 23 is Babylonians created a new place based on 60! For example: 60 2 +60+1 is written:

10. 4. Babylonian Numeration System This system then takes into account: additive and place. How would the Babylonians represent? a) 42 b) 125 c) 3673 d) 3624

11. Babylonian Number System What is needed here that the Egyptian and Roman systems did not have?

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