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  2. John Machin - Wikipedia

    en.wikipedia.org/wiki/John_Machin

    In 1706, Machin computed the value of π with the formula given below to one hundred decimal places. His ingenious quadrature of the circle was later investigated by Charles Hutton. A mass of his manuscripts is preserved by the Royal Astronomical Society ; and writing to William Jones in 1727, he asserted his claim to the parliamentary reward ...

  3. Machin-like formula - Wikipedia

    en.wikipedia.org/wiki/Machin-like_formula

    In mathematics, Machin-like formulas are a popular technique for computing π (the ratio of the circumference to the diameter of a circle) to a large number of digits.They are generalizations of John Machin's formula from 1706:

  4. List of mathematical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_constants

    Continued fractions with more than 20 known terms have been truncated, with an ellipsis to show that they continue. Rational numbers have two continued fractions; the version in this list is the shorter one. Decimal representations are rounded or padded to 10 places if the values are known.

  5. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    In decimal numbers greater than 1 (such as 3.75), the fractional part of the number is expressed by the digits to the right of the decimal (with a value of 0.75 in this case). 3.75 can be written either as an improper fraction, 375/100, or as a mixed number, ⁠3 + 75 / 100 ⁠. Decimal fractions can also be expressed using scientific notation ...

  6. Decimal separator - Wikipedia

    en.wikipedia.org/wiki/Decimal_separator

    Any such symbol can be called a decimal mark, decimal marker, or decimal sign. Symbol-specific names are also used; decimal point and decimal comma refer to a dot (either baseline or middle ) and comma respectively, when it is used as a decimal separator; these are the usual terms used in English, [ 1 ] [ 2 ] [ 3 ] with the aforementioned ...

  7. De Thiende - Wikipedia

    en.wikipedia.org/wiki/De_Thiende

    The idea of extending the decimal place-value system to include fractions was discovered by several mathematicians. The most influential of these was Simon Stevin, a Flemish mathematician and engineer who popularized the system in a booklet called De Thiende ("The tenth"), first published in 1585. By extending place value to tenths, hundredths ...

  8. Common logarithm - Wikipedia

    en.wikipedia.org/wiki/Common_logarithm

    Tables of common logarithms typically listed the mantissa, to four or five decimal places or more, of each number in a range, e.g. 1000 to 9999. The integer part, called the characteristic, can be computed by simply counting how many places the decimal point must be moved, so that it is just to the right of the first significant digit. For ...

  9. 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.