Elementary Algebra Review Part 4

In this Elementary Algebra Review lesson, students are taught how to add and subtract positive and negative numbers, as well as how to simplify numerical expressions using the order of operations. The lesson goes into detail about filling in the blanks with positive or negative numbers, and understanding absolute values. The transcript also provides step-by-step guidance on how to simplify expressions and sets out the order in which to perform the operations.

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

• 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?