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  2. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    The Romans used a duodecimal rather than a decimal system for fractions, as the divisibility of twelve (12 = 2 2 × 3) makes it easier to handle the common fractions of 1 ⁄ 3 and 1 ⁄ 4 than does a system based on ten (10 = 2 × 5). Notation for fractions other than 1 ⁄ 2 is mainly found on surviving Roman coins, many of which had values ...

  3. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    (For example, two-fifths is the fraction ⁠ 2 / 5 ⁠ and two fifths is the same fraction understood as 2 instances of ⁠ 1 / 5 ⁠.) Fractions should always be hyphenated when used as adjectives. Alternatively, a fraction may be described by reading it out as the numerator over the denominator, with the denominator expressed as a cardinal ...

  4. Field (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Field_(mathematics)

    Given an integral domain R, its field of fractions Q(R) is built with the fractions of two elements of R exactly as Q is constructed from the integers. More precisely, the elements of Q(R) are the fractions a/b where a and b are in R, and b ≠ 0. Two fractions a/b and c/d are equal if and only if ad = bc. The operation on the fractions work ...

  5. “History Cool Kids”: 91 Interesting Pictures From The Past

    www.aol.com/lifestyle/history-cool-kids-91...

    Image credits: historycoolkids The History Cool Kids Instagram account has amassed an impressive 1.5 million followers since its creation in 2016. But the page’s success will come as no surprise ...

  6. Macdonald Hall - Wikipedia

    en.wikipedia.org/wiki/Macdonald_Hall

    Macdonald Hall is a series of young adult novels by author Gordon Korman.The series was formerly named Bruno and Boots.. The series is set in a Canadian boarding school for boys called Macdonald Hall (named for John A. Macdonald, the first prime minister of Canada), located somewhere north of the city of Toronto along Highway 48 and seven miles south of the fictitious town of Chutney. [1]

  7. New Math - Wikipedia

    en.wikipedia.org/wiki/New_Math

    [5] In 1965, physicist Richard Feynman wrote in the essay, New Textbooks for the "New" Mathematics : If we would like to, we can and do say, "The answer is a whole number less than 9 and bigger than 6," but we do not have to say, "The answer is a member of the set which is the intersection of the set of those numbers which are larger than 6 and ...

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