Egyptian (c. 3500 B.C.) 1 Symbols: 10 10 10 10' 105 10 10' n 9 F -- Example: 12013 3+1(10) + 2(10) + 1(10') 1= Babylonian (c. 2500 B.C.) Symbols: 1 = T 10 = < Examples: 23 T-T 95 = 60(1) + 35: T{ < T+T+T Mayan (c. 400 B.C.) 4002=> 60 K Symbols: For 1-19, DOTS AND LINES COMBINED AS IN EXAMPLES BELOW: - Example: 18 20 A Aztec (c. A.D. 1250) (1 x 7200) + (18 x 360) + (5 x 20) + 0 = 13 780 Symbols: 1 P 400 8000 Example: 9287 == PP PP