# 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

 ebaines Posts: 10,136, Reputation: 5589 Expert #2 Aug 20, 2007, 08:16 AM
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.
 kt1205 Posts: 125, Reputation: 27 - #3 Aug 20, 2007, 11:52 AM
Remember the saying
Please excuse my dear aunt sally
Please starts with p so does parenthesis
Excuse - exponents
My - multiplication
Dear - division
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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