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  2. Subtraction - Wikipedia

    en.wikipedia.org/wiki/Subtraction

    In what is known in the United States as traditional mathematics, a specific process is taught to students at the end of the 1st year (or during the 2nd year) for use with multi-digit whole numbers, and is extended in either the fourth or fifth grade to include decimal representations of fractional numbers.

  3. Subtract a square - Wikipedia

    en.wikipedia.org/wiki/Subtract_a_square

    the number N+1 is 'cold' if only 'hot' numbers can be reached by subtracting a positive square; the number N+1 is 'hot' if at least one 'cold' number can be reached by subtracting a positive square; Using this algorithm, a list of cold numbers is easily derived: 0, 2, 5, 7, 10, 12, 15, 17, 20, 22, 34, 39, 44, … (sequence A030193 in the OEIS)

  4. Cube (algebra) - Wikipedia

    en.wikipedia.org/wiki/Cube_(algebra)

    y = x 3 for values of 1 ≤ x ≤ 25.. In arithmetic and algebra, the cube of a number n is its third power, that is, the result of multiplying three instances of n together. The cube of a number n is denoted n 3, using a superscript 3, [a] for example 2 3 = 8.

  5. Mnemonic - Wikipedia

    en.wikipedia.org/wiki/Mnemonic

    Knuckle mnemonic for the number of days in each month of the Gregorian calendar.Each knuckle represents a 31-day month. A mnemonic device (/ n ə ˈ m ɒ n ɪ k / nə-MON-ik) [1] or memory device is any learning technique that aids information retention or retrieval in the human memory, often by associating the information with something that is easier to remember.

  6. Book of Numbers - Wikipedia

    en.wikipedia.org/wiki/Book_of_Numbers

    MS. Kennicott 3, created in 1299. Shows the beginning of Numbers with its first word illustrated with calligraphy: וידבר ‎ Way-ḏabbêr, "And He spoke…" Most commentators divide Numbers into three sections based on locale (Mount Sinai, Kadesh-Barnea and the plains of Moab), linked by two travel sections; [7] an alternative is to see it as structured around the two generations of ...

  7. 4th Special Operations Squadron - Wikipedia

    en.wikipedia.org/wiki/4th_Special_Operations...

    The squadron plans, prepares and executes AC-130J gunship missions, providing precise delivery of munitions supporting joint conventional and special operations forces. It directly supports unified and theater special operations commands by conducting close air support, armed aerial reconnaissance, and interdiction missions worldwide in support of Secretary of Defense taskings.

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