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All aboard!
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The Order of Operations Train!
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Order of Operations: What does it mean?
Break it down into parts: Order Operations of Who goes first in line? -
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Who goes first? Do I multiply or subtract first? Why does it matter?
Soooooooooo……. The order of operations is the order in which EACH operation is performed in an expression or equation! 5 x 13 – 10 Who goes first? Do I multiply or subtract first? Why does it matter?
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Why??? There is a certain order in which multiplication, division, addition, and subtraction must be performed when they are grouped together. If you do not use the proper order, your answer will be incorrect!
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Just remember to excuse this lady:
Who goes first? Just remember to excuse this lady: Aunt Sally!
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To remember which order to do each operation:
S Please Excuse My Dear Aunt Sally!
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P M D A S Parentheses Multiply or Divide Add or Subtract
exponents M D Multiply or Divide A S Add or Subtract ….and one more thing.
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YOU MUST ALWAYS SOLVE FROM LEFT TO RIGHT!(EVERY TIME!)
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Let’s try a few examples:
To do this, get on the train and go in order from left to right following PeMDAS! Let’s try a few examples: Which operation would come first, second, etc… x 4 72 ÷ 3 – 10 20 x (10 – 7)
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More practice time……
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