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### Order of Operations

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.

- Intro 0:00
- Why We Need It
- Example: Order of Operations
- Procedure To Evaluate 3:22
- Lecture Example 1 6:45
- Lecture Example 2 10:55
- Additional Example 3
- Additional Example 4

1 answer

Last reply by: Jorge Sardinas

Sun Apr 15, 2012 7:01 PM

Post by Jorge Sardinas on April 15, 2012

i get it

0 answers

Post by javier mancha on August 20, 2011

if 3 square minus 2, is in ( parenthasis) .. then why is he working out the, exponent, first,, AND NOT THE (parenthasis) FIRST,WTF

3 answers

Last reply by: javier mancha

Sat Aug 20, 2011 10:38 PM

Post by victoria wu on June 10, 2011

at what age do u usually start algebra?

not sure if i am at the right level.

5 answers

Last reply by: Lucas Santiago

Tue Jun 12, 2012 6:51 PM

Post by curtis wikel on June 7, 2009

Example 1 you bring down the -12 and then subtract not add ? +324, to get 312, you lost me there is not 12-24=12 how did it become -12