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PRACTICE WITH ORDER OF OPERATIONS
Jump right to the exercises!
The concepts for this exercise are summarized below.
For a complete discussion, read the text.
The order that operations are to be performed (when not clearly identified)
is summarized with the following memory device:
Please Excuse My Dear Aunt Sally (PEMDAS)
- Do things inside Parentheses first (using PEMDAS, if needed, inside the parentheses).
- Then do all Exponents, in order as they occur, going from left to right.
- Then do all Multiplications/Divisions (they have equal weight) in order as they occur, going from left to right.
- Finally, do all Additions/Subtractions (they have equal weight) in order as they occur, going from left to right.
EXAMPLES:
-1 + 3 × 5 - 2 = -1 + (3 × 5) - 2 = 12
2 - 10 ÷ 5 + 3 = 2 - (10/5) + 3 = 3
Feel free to use a pencil and scrap paper to work these problems.
However, do not use your calculator!