# Elementary Algebra Review Part 4

Taught by YourMathGal
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Part of video series
Lesson Description:

Adding and subtracting positive & negative numbers, absolute values, simplifying numerical expressions using order of operations

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

• Is p + p positive or negative if p is positive?
• Is n + n positive or negative if n is negative?
• If p is a positive number and n is a negative numbers, and p and n are not opposites, how can you tell if expressions involving p and n are positive or negative?
• Is -p positive or negative if p is positive?
• Is -n positive or negative if n is negative?
• Is |p| positive or negative if p is positive?
• Is |n| positive or negative if n is negative?
• Is |p + n| positive or negative if p is positive and n is negative?
• Is |n - p| positive or negative if p is positive and n is negative?
• How do you write word phrases as expressions?
• Subtract -6 from -11 can be written as what expression?
• Decrease -15 by 13 can be written as what expression?
• How do you simplify numerical expressions using order of operations?
• How do you simplify 4 - 6(3 - 10) using order of operations?
• How do you simplify 5^2 - 6^2 + 2 using order of operations?
• #### Staff Review

• Currently 4.0/5 Stars.
This lesson works with positive and negative numbers and absolute values, determining whether operations done to them will result in positive or negative values. Also, more phrases are written as expressions, and expressions are simplified using order of operations. All work is shown and explained.