Dr. Fraser begins with an example and the definition of Order of Operations. The procedure to evaluate an arithmetic expression is next and consists of starting with grouping symbols, then moving onto powers, multiplying/dividing from left to right, and finishing with adding/subtracting left to right. The lecture concludes with four video examples where you will evaluate arithmetic expressions.The standard order of operations, or precedence, is expressed in the following exponents and roots.
When evaluating a
numerical expression, follow the standard order of operations:
first evaluate powers, then multiply and divide from left to right,
then add and subtract from left to right. BUT: parentheses and
other grouping symbols (fraction bar, brackets, etc) always override
the standard rules. Always work within grouping symbols first.
If the expression
contains variables, substitute the values that are given for the
variables and then use the rules for order of operations on the
resulting numerical expression.
Order of Operations
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.