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  2. History of ancient numeral systems - Wikipedia

    en.wikipedia.org/wiki/History_of_ancient_numeral...

    In the Etruscan system, the symbol 1 was a single vertical mark, the symbol 10 was two perpendicularly crossed tally marks, and the symbol 100 was three crossed tally marks (similar in form to a modern asterisk *); while 5 (an inverted V shape) and 50 (an inverted V split by a single vertical mark) were perhaps derived from the lower halves of ...

  3. Babylonian cuneiform numerals - Wikipedia

    en.wikipedia.org/wiki/Babylonian_cuneiform_numerals

    This was an extremely important development because non-place-value systems require unique symbols to represent each power of a base (ten, one hundred, one thousand, and so forth), which can make calculations more difficult. Only two symbols (𒁹 to count units and 𒌋 to count tens) were used to notate the 59 non-zero digits.

  4. Maya numerals - Wikipedia

    en.wikipedia.org/wiki/Maya_numerals

    The Mayan numeral system was the system to represent numbers and calendar dates in the Maya civilization. It was a vigesimal (base-20) positional numeral system. The numerals are made up of three symbols: zero (a shell), [1] one (a dot) and five (a bar). For example, thirteen is written as three dots in a horizontal row above two horizontal ...

  5. Numerology - Wikipedia

    en.wikipedia.org/wiki/Numerology

    Angel numbers, as defined by Doreen Virtue and Lynnette Brown in 2004, are numbers consisting of repeating digits, such as 111 or 444. [20] As of 2023 [update] , a number of popular media publications have published articles suggesting that these numbers have numerological significance. [ 21 ]

  6. Ethnomathematics - Wikipedia

    en.wikipedia.org/wiki/Ethnomathematics

    In fact, in some languages, the words for 5 and 20 refer to these body parts. The words for numbers below 20 are based on 5 and higher numbers combine the lower numbers with multiples and powers of 20. This description of hundreds of African languages is badly oversimplified. [20]

  7. Egyptian numerals - Wikipedia

    en.wikipedia.org/wiki/Egyptian_numerals

    A large number like 9999 could thus be written with only four signs—combining the signs for 9000, 900, 90, and 9—as opposed to 36 hieroglyphs. Boyer saw the new hieratic numerals as ciphered, mapping one number onto one Egyptian letter for the first time in human history.

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  9. History of mathematical notation - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematical...

    The ancient Greeks employed Attic numeration, [22] which was based on the system of the Egyptians and was later adapted and used by the Romans. Greek numerals one through four were written as vertical lines, as in the hieroglyphics. The symbol for five was the Greek letter Π (pi), representing the Greek word for 'five' (pente). Numbers six ...