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  2. Elementary arithmetic - Wikipedia

    en.wikipedia.org/wiki/Elementary_arithmetic

    The symbols for elementary-level math operations. From top-left going clockwise: addition, division, multiplication, and subtraction. Elementary arithmetic is a branch of mathematics involving addition, subtraction, multiplication, and division.

  3. Method of complements - Wikipedia

    en.wikipedia.org/wiki/Method_of_complements

    In grade schools, students are sometimes taught the method of complements as a shortcut useful in mental arithmetic. [3] Subtraction is done by adding the ten's complement of the subtrahend, which is the nines' complement plus 1. The result of this addition is used when it is clear that the difference will be positive, otherwise the ten's ...

  4. Arithmetic - Wikipedia

    en.wikipedia.org/wiki/Arithmetic

    For example, subtraction is the inverse of addition since a number returns to its original value if a second number is first added and subsequently subtracted, as in + =. Defined more formally, the operation " ⋆ {\displaystyle \star } " is an inverse of the operation " ∘ {\displaystyle \circ } " if it fulfills the following condition: t ⋆ ...

  5. Substitution cipher - Wikipedia

    en.wikipedia.org/wiki/Substitution_cipher

    In this cipher, a 5 x 5 grid is filled with the letters of a mixed alphabet (two letters, usually I and J, are combined). A digraphic substitution is then simulated by taking pairs of letters as two corners of a rectangle, and using the other two corners as the ciphertext (see the Playfair cipher main article for a diagram). Special rules ...

  6. Which other presidents have pardoned relatives? Trump is on ...

    www.aol.com/other-presidents-pardoned-relatives...

    WASHINGTON − President Joe Biden’s pardon of his son Hunter Biden, who was convicted of federal gun charges and tax evasion, rocked the political world with Republican lawmakers and President ...

  7. Fantasy football Week 12: Trade value chart and rest-of ... - AOL

    www.aol.com/fantasy-football-week-12-trade...

    Important note: If you're offered an uneven trade (i.e., a 2-for-1 or 3-for-1), include the values for the players you'd be moving to the bench or dropping within your calculation.

  8. Subtraction - Wikipedia

    en.wikipedia.org/wiki/Subtraction

    Placard outside a shop in Bordeaux advertising subtraction of 20% from the price of the second perfume purchased. Subtraction (which is signified by the minus sign −) is one of the four arithmetic operations along with addition, multiplication and division. Subtraction is an operation that represents removal of objects from a collection. [1]

  9. Trump demands immediate dismissal of New York "hush money ...

    www.aol.com/trump-demands-immediate-dismissal...

    In a letter made public Wednesday, defense attorneys Todd Blanche and Emil Bove — both slated to take on senior roles under Trump in the federal Department of Justice — wrote to the judge who ...

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