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Examine the sophisticated base 20 system developed by the ancient Maya, which included a value for zero.

The Kaktovik Iñupiaq numerals are great. ————— ▻ SUPPORT ARTIFEXIAN ON PATREON: ...

A youtuber named Wifies took some inspiration from the prison community to build an unbreachable base. It's very great in ...

View full lesson: http://ed.ted.com/lessons/a-brief-history-of-numerical-systems-alessandra-king 1, 2, 3, 4, 5, 6, 7, 8, 9... and 0.

This mental multiplication trick uses the idea of a third number - a base number - to help us multiply two numbers in your head.

base 20.

Numberblocks but it's Base-20 (Vigesimal) (Fixed) #numberblocks #vigesimal.