P E MD AS (Please Excuse My Dear Aunt Sally)
"ALWAYS MOVING LEFT TO RIGHT"
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1st) Parenthesis
2nd) Exponents
3rd) * and /
(It maybe helpful to change Divide to Mult. "the INVERSE")
4th) + and - (change Subt. to Add "the OPPOSITE")
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48/8*3 is 6*3 which is 18 ... Do NOT do the Mult. first 48 / 24
(The process does not say to MULT. and THEN DIVIDE.
It gives them equal billing as you move Left-to-Right!
Division is really Multiplication of the RECIPROCAL,
"MD" could just be considered MULTIPLICATION only.)
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Subtraction becomes Additon of the OPPOSITE:
-8 - (-2) NEGATIVE 8 Minus Negative 2
Becomes:
Negative 8 PLUS Positive 2 ... -8 + 2 = -6
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Simplify Arithmetic Expressions
