INSTRUCTORS Carleen Eaton Grant Fraser

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### Expressions and Formulas

• When evaluating an expression, follow the standard order of operations: first calculate exponents, then multiply and divide from left to right, then add and subtract from left to right. BUT: parentheses always override the standard rules. Always work within parentheses first.

• Review and understand the key terms: variable, expression, monomial, constant, coefficient, polynomial, term, like terms, binomial, trinomial.

### Expressions and Formulas

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
• Order of Operations 0:51
• Variables and Algebraic Expressions
• Order of Operations
• Monomials 5:25
• Examples
• Constant, Coefficient, Degree, Power
• Polynomials 8:29
• Examples
• Terms, Like Terms, Binomial, Trinomial
• Formulas 12:35
• Examples: Area, Volume, Surface Area
• Lecture Example 1 15:50
• Lecture Example 2 21:31