*(Please note that you will have access to a chart of commonly used formulas during the actual test. If you would like to use it for these flashcards, it can be accessed [here](https://hiset.ets.org/s/pdf/mathematics_formula_sheet.pdf) and opened in another window or printed out for easy reference. You will only need it for some questions.)* What is the first step to simplify this? $$\left[ {6\left( {{3^2} - 15} \right) \div 7 + 3\left( {12 + 23} \right)} \right] \div 2$$

Flashcard 1 - Mathematics Flashcard Set for the HiSET Test

Back

Square $3.$

Explanation:

Remember to follow the order of operations (PEMDAS):
Do everything in parentheses (P), left to right.
Evaluate any exponents (E), left to right.
Do all multiplication and division (MD), in order, left to right.
Then do all addition and subtraction (AS), in order, from left to right.
Good way to remember: Please Excuse My Dear Aunt Sally

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