1. Unit: Operations with Rational Numbers
Video # 4
Learning Target: I can simplify expressions using the order of operations (with absolute value).

2. What is absolute value?
Absolute value is a number’s distance from 0 on a number line. It is represented with two bars:
To find the absolute value of a number simply make the number positive
If it is already positive leave it alone!
Ex:
*If there is a negative on the outside of the absolute value, your answer is negative.
Ex. - |11| = -11
Ex. - |-4| = - 4

3. Examples: Find the absolute value. |4| Find the absolute value. |-5|
Compare using <, >, or =.  
|-10| |-7|
 |-8| -|4|
 |-3| |11|
|-2| |2| 4 5 -6
10 > 7
8 > -4
3 < 11
2 = 2

4. Order of Operations PEMDAS!! P- Parentheses E- Exponents
M/D- Multiplication/Division (whichever comes first from left to right)
A/S- Addition/Subtraction (whichever comes first from left to right)
*Absolute value signs should be treated like parentheses and done first
*If there is a fraction, simplify the top and bottom separately, then treat the fraction as division

5. Example:
56-15  8 + 14 = 2
41  8 + 14 =
41  /2 = =
335
3+ -12- 4  7 = 8 3+ -16  7 = /8  7 =  7 = = 17