1. By: Piyali, Anushka, Varun, Suhruth20 20
Vigesimal 20 20 20 20
By: Piyali, Anushka, Varun, Suhruth

2. Vigesimal Conversion Chart
Decimal
Vigesimal 1 2 3 4 5 6 7 8 9 10 A 11 B 12 C 13 D 14 E 15 F 16 G 17 H 18 I 19 J
This is a vigesimal conversion chart. It shows base 10 numbers converted into base 20.

3. Vigesimal Mayan chart
The Vigesimal Mayan Chart has over billions of symbols in it, from 0 – 19. Each one is unique in it’s own special way. The Mayans used to carve them on the walls.

4. Multiplication
Vigesimal multiplication answers are very weird. Instead of just writing your answer you do something a little bit different. First you find the actual answer in base 10. Now this is how you convert it into base 20. In the beginning as the first digit you find how many 20s go into the base 10 answer. As the second digit you see how many left over ones there are. If there are no ones left you just put a zero. For example A x B would equal 10 x 11 in base 10. Then we solve it and then it equals s go into 110 and there are 10 left over. 10 in base 20 is A so the answer is 5A. What is G x 8? Look at the multiplication chart on the next slides.

5. EXAMPLES
Resource: 2G
+1H 4B A
x B
----- 5A

6. Vigesimal multiplication chart1 2 3 4 5 6 7 8 9 A B C D E F G H I J 10 12 14 16 18 1A 1C 1E 1G 1I 20 11 17 1D 1J 22 25 28 2B 2E 2H 30 24 2C 2G 34 38 3C 3G 40 15 1F 2A 2F 35 3A 3F 45 4A 4F 50 36 3I 44 4G 52 58 5E 60 29 33 3H 4B 4I 55 5C 5J 66 6D 70 48 54 68 6G 74 7C 80 41 4J 5H 6F 7D 82 8B 90 5A 6A 7A 8A 9A A0 61 6C 73 7E 85 8G 97 9I A9 B0 7G 88 9C A4 AG B8 C0 89 92 9F A8 B1 BE C7 D0 9G AA B4 BI CC D6 E0 B5 CF DA E5 F0 CG DC E8 F4 G0 E9 F6 G3 H0 G4 H2 I0 I1 J0
100

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