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  2. 1899 Puerto Rico census - Wikipedia

    en.wikipedia.org/wiki/1899_Puerto_Rico_Census

    Somewhat more than three-fifths of the population of Porto Rico are white and nearly two-fifths are partly or entirely negro or Black. By the 1899 census five-sixths (83.6 per cent) of the total colored were returned as of mixed blood. [13]

  3. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    To change ⁠ 1 / 3 ⁠ to a decimal, divide 1.000... by 3 (" 3 into 1.000... "), and stop when the desired accuracy is obtained, e.g., at 4 decimals with 0.3333. The fraction ⁠ 1 / 4 ⁠ can be written exactly with two decimal digits, while the fraction ⁠ 1 / 3 ⁠ cannot be written exactly as a decimal with a finite number of digits.

  4. List of presidents of the United States by time in office

    en.wikipedia.org/wiki/List_of_presidents_of_the...

    32nd • March 4, 1933 – April 12, 1945 [c] Three full terms; died 2 months and 23 days into fourth term 2 tie: Thomas Jefferson: 2,922 3rd • March 4, 1801 – March 4, 1809: Two full terms James Madison: 2,922 4th • March 4, 1809 – March 4, 1817: Two full terms James Monroe: 2,922 5th • March 4, 1817 – March 4, 1825: Two full terms ...

  5. Academic quarter (year division) - Wikipedia

    en.wikipedia.org/wiki/Academic_quarter_(year...

    This quarter system was adopted by the oldest universities in the English-speaking world (Oxford, founded circa 1096, [1] and Cambridge, founded circa 1209 [2]). Over time, Cambridge dropped Trinity Term and renamed Hilary Term to Lent Term, and Oxford also dropped the original Trinity Term and renamed Easter Term as Trinity Term, thus establishing the three-term academic "quarter" year widely ...

  6. Division (mathematics) - Wikipedia

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

    In terms of partition, 20 / 5 means the size of each of 5 parts into which a set of size 20 is divided. For example, 20 apples divide into five groups of four apples, meaning that "twenty divided by five is equal to four". This is denoted as 20 / 5 = 4, or ⁠ 20 / 5 ⁠ = 4. [2] In the example, 20 is the dividend, 5 is the divisor, and 4 is ...

  7. Long division - Wikipedia

    en.wikipedia.org/wiki/Long_division

    127 ÷ 4 = 31.75 124 30 (bring down 0; decimal to quotient) 28 (7 × 4 = 28) 20 (an additional zero is added) 20 (5 × 4 = 20) 0 In Mexico , the English-speaking world notation is used, except that only the result of the subtraction is annotated and the calculation is done mentally, as shown below:

  8. Piphilology - Wikipedia

    en.wikipedia.org/wiki/Piphilology

    Notice how the first word has three letters, the second word has one, the third has four, the fourth has one, the fifth has five, and so on. In longer examples, 10-letter words are used to represent the digit zero , and this rule is extended to handle repeated digits in so-called Pilish writing.

  9. Irreducible fraction - Wikipedia

    en.wikipedia.org/wiki/Irreducible_fraction

    In the second step, they were divided by 3. The final result, ⁠ 4 / 3 ⁠, is an irreducible fraction because 4 and 3 have no common factors other than 1. The original fraction could have also been reduced in a single step by using the greatest common divisor of 90 and 120, which is 30. As 120 ÷ 30 = 4, and 90 ÷ 30 = 3, one gets