order of operations. does the order in which operations are done make any difference? ex. which is...
TRANSCRIPT
Does the order in which operations are done make any difference?
Ex. Which is the correct answer when simplifying 6 + 3 x 12?
6+3x12
=9x12
=108
OR
6+3x12
=6+36
=42
PEMDAS (Please Excuse My Dear Aunt Sally)
ParenthesisExponentsMultiplication/Division Addition/Subtraction
Grouping Symbols
Grouping symbols such as parentheses ( ), brackets [ ], and braces are used to clarify or change the order of operations.
They indicate that the expression within the grouping symbol is to be evaluated first.
Fraction Bar
A fraction bar is another type of grouping symbol.
It indicates that the numerator and denominator should each be treated as a single value.
Evaluating Algebraic Expressions
First replace the variables with their values.
Then, find the value of the numerical expressions using the order of operations.
Use Algebraic Expressions
Draw diagrams when possible.
Write an expression that represents what the question is asking you to find.