1. Algebraic Expressions 1 Word Problems 2 Evaluating Expressions 3 Simplifying Expressions

2. Word Problems • Identify action words (usually operators) • Less than • More than • Times • Increased by • Identify amounts • Static • Variable

3. Word Problems Write seven fewer than a number t as an algebraic expression. Seven fewer Than a number t

4. Word Problems You start with $20 and save $6 each week. Begin with $20 (static amount) Save $6 (variable amount) Each week (variable)

5. Evaluating Algebraic Expressions • Write the original expression • Substitute for each variable • Follow the Order of Operations

6. Evaluating Algebraic Expressions • Evaluate for a=-4, b=5

7. Evaluating Algebraic Expressions • Evaluate for x=1, y=1/2

8. Simplifying Algebraic Expressions • Like terms • Have the exact same variables (including powers) • Coefficients can be combined • Variables remain unchanged Like Terms Like Terms

9. Simplifying Algebraic Expressions • Identify like terms • Combine like terms • Rewrite expression

10. Simplifying Algebraic Equations Simplify