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  2. Casting out nines - Wikipedia

    en.wikipedia.org/wiki/Casting_out_nines

    If the digit 9 is ignored when summing the digits, the effect is to "cast out" one more 9 to give the result 12. More generally, when casting out nines by summing digits, any set of digits which add up to 9, or a multiple of 9, can be ignored. In the number 3264, for example, the digits 3 and 6 sum to 9.

  3. Trick or Treat Yo'self With These 19 Free Printable ... - AOL

    www.aol.com/trick-treat-yoself-19-free-224832976...

    Trick or Treat Yo'self With These 19 Free Printable Halloween Word Search Puzzles. Michelle Parkerton. October 31, 2024 at 3:33 PM. ... 19 Free Printable Halloween Word Search Puzzles.

  4. List of mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_mnemonics

    In most words like friend, field, piece, pierce, mischief, thief, tier, it is "i" which comes before "e". But on some words with c just before the pair of e and i, like receive, perceive, "e" comes before "i". This can be remembered by the following mnemonic, I before E, except after C

  5. Trick or Treat Yo'self With These 19 Free Printable ... - AOL

    www.aol.com/lifestyle/trick-treat-yoself-19-free...

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  6. Mnemonic major system - Wikipedia

    en.wikipedia.org/wiki/Mnemonic_major_system

    Numzi also has an iOS app which is a portable Major System number-word converter. 2Know is free Windows software for converting numbers to words (English, German, French). Mnemisis Another free mnemonic program - runs on Linux, Mac OS X, and Windows; Memagine iPhone app that uses the system to teach how to recall a list of up to 100 items in ...

  7. Just Words: Tips and Tricks - AOL

    www.aol.com/news/2014-07-29-just-words-tips-and...

    Instead of lugging around the dictionary for that perfect seven-letter word, here are some tips and tricks to help you throw down the game-winning play without staring at your letters for hours on ...

  8. Book test - Wikipedia

    en.wikipedia.org/wiki/Book_test

    The "Page, Line and Word" trick uses two or three spectators, handing one a book (the "reader"), another an envelope, and the third pencil and paper (the "writer"). The writer is asked to imagine opening the book and selecting a word at random, and then writes down the page, line and word number they imagined. The magician then palms the writer ...

  9. Divisibility rule - Wikipedia

    en.wikipedia.org/wiki/Divisibility_rule

    Note: The reason why this works is that if we have: a+b=c and b is a multiple of any given number n, then a and c will necessarily produce the same remainder when divided by n. In other words, in 2 + 7 = 9, 7 is divisible by 7. So 2 and 9 must have the same remainder when divided by 7. The remainder is 2.