The Mayans developed a base-20 numeric system using dots and bars to represent numbers from 1 to 19. They represented zero with an empty space. Numbers were written in a place-value system with the units, twenties, hundreds, and higher places. They could perform addition, subtraction, and multiplication using their unique system. The Mayans made advances in mathematics during the Early and Late Classic periods between 292 AD to 889 AD.

1. MAYAN NUMERALS CREATED BY: Rodna, Mayra, Veronica, Melinda, and Cassidy MAT 146

4. Units represented with dots ( ) and bars ( )

5. = 1 unit, = 5 units

8. Placements 5th floor 160,000 8,000 X 20 = 160,000 4th floor 8,000 400 X 20 = 8,000 3rd floor 400 20 X 20 = 400 2nd floor 20 1 X 20 = 20 1 1st floor 1

10. The Numbers 8,000 (1+1) = 16,000 400(0) = 0 20(5+5+5) = 300 1(5 + 3) = 8 _______________ 16,308

11. Adding Mayan Numbers + = 6 3 9 20 + = 18 19 19 38 38 Combine them to fill place value

12. Subtracting Mayan Numbers = 4 19 15

15. Works Cited Arellano, Angelicia, Wallach. Maya Mathematics and Science. 6 June 2003. 16 Sept 2009, <math.ucsd.edu>. Hooker, Richard. The Mayans. 1996. 16 Sept 2009, <http://www.wsu.edu>. Morley, Sylvanus Griswold, George Walton Brainerd, Robert J. Sharer. The Ancient Maya. 4th E. 1983. Stanford UP, CA. 16 Sept, 2009 Mayan Numbers. Main Lesson. 13 Sept 2009, <http://www.niti.org/mayan/lesson.htm>. Peat, F. David. Blackfoot Physics: A Journey Into the Native American Universe. 2002. Red Wheel/Weiser, LLC, ME. 16 Sept. 2009 Unlikely Science: Mayan Multiplication. 19 Sept 2007. 16 Sept 2009, <nullbloggers.blogspot.com/2007/…/mayan-multiplication.html>.