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  2. Counting rods - Wikipedia

    en.wikipedia.org/wiki/Counting_rods

    The value of a number depends on its physical position on the counting board. A 9 at the rightmost position on the board stands for 9. Moving the batch of rods representing 9 to the left one position (i.e., to the tens place) gives 9[] or 90. Shifting left again to the third position (to the hundreds place) gives 9[][] or 900.

  3. Positional notation - Wikipedia

    en.wikipedia.org/wiki/Positional_notation

    For example, the time might be 10:25:59 (10 hours 25 minutes 59 seconds). Angles use similar notation. For example, an angle might be 10° ‍ 25′ ‍ 59″ (10 degrees 25 minutes 59 seconds). In both cases, only minutes and seconds use sexagesimal notation—angular degrees can be larger than 59 (one rotation around a circle is 360°, two ...

  4. Chinese mathematics - Wikipedia

    en.wikipedia.org/wiki/Chinese_mathematics

    Visual proof for the (3, 4, 5) triangle as in the Zhoubi Suanjing 500–200 BCE Oracle bone script numeral system counting rod place value decimal. Shang dynasty (1600–1050 BC). One of the oldest surviving mathematical works is the I Ching, which greatly influenced written literature during the Zhou dynasty (1050–256 BC).

  5. Numeral system - Wikipedia

    en.wikipedia.org/wiki/Numeral_system

    To generate the rest of the numerals, the position of the symbol in the figure is used. The symbol in the last position has its own value, and as it moves to the left its value is multiplied by b. For example, in the decimal system (base 10), the numeral 4327 means (4×10 3) + (3×10 2) + (2×10 1) + (7×10 0), noting that 10 0 = 1.

  6. Decimal - Wikipedia

    en.wikipedia.org/wiki/Decimal

    Place value of number in decimal system. The decimal numeral system (also called the base-ten positional numeral system and denary / ˈ d iː n ər i / [1] or decanary) is the standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers (decimal fractions) of the Hindu–Arabic numeral system.

  7. Factorial number system - Wikipedia

    en.wikipedia.org/wiki/Factorial_number_system

    For another example, the greatest number that could be represented with six digits would be 543210! which equals 719 in decimal: 5×5! + 4×4! + 3x3! + 2×2! + 1×1! + 0×0!. Clearly the next factorial number representation after 5:4:3:2:1:0! is 1:0:0:0:0:0:0! which designates 6! = 720 10, the place value for the radix-7 digit. So the former ...

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