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  • Aug 19, 2007, 12:00 PM
    lalmon3
    Stumped by Order of Operations
    I have been trying to figure out how to place the fewest number grouping symbols in the numerical expressions below so the equation is true. Any help on figuring these out?

    2 squared - 1 cubed * 1 + 1 = 54

    5 - 2 sqaured + 4 * 7 - 3 = 54:confused: :confused:
  • Aug 20, 2007, 08:16 AM
    ebaines
    I'll give you a hint on the first one: 54 is equal to 27 x 2. Now, can you group the terms to get the equivalent of 27 x 2?

    As for order of operation, recall that parentheses take precedence over everything else, so use them as needed to clarify. After that, exponents take precedence, then multiplication and division, and lastly addition and subtraction.

    On the 2nd problem, please confirm that the value of the number is 54, and not 52. Thanks.
  • Aug 20, 2007, 11:52 AM
    kt1205
    Remember the saying
    Please excuse my dear aunt sally
    Please starts with p so does parenthesis
    Excuse - exponents
    My - multiplication
    Dear - division
    Aunt -add
    Sally - subtract

    Use the 1st letter of each word in "please excuse my dear aunt sally" and in that order use the one that starts with that letter

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