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Transparency 6. Click the mouse button or press the Space Bar to display the answers. Splash Screen. Example 6-4b. Objective. Evaluate algebraic expressions. Example 6-4b. Vocabulary. Algebra. A language of symbols. Example 6-4b. Vocabulary. Variable.

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  1. Transparency 6 Click the mouse button or press the Space Bar to display the answers.

  2. Splash Screen

  3. Example 6-4b Objective Evaluate algebraic expressions

  4. Example 6-4b Vocabulary Algebra A language of symbols

  5. Example 6-4b Vocabulary Variable A symbol, usually a letter, used to represent a number X Y (note: avoid using o, I, s because they look like numbers)

  6. Example 6-4b Vocabulary Algebraic expression A combination of variables, numbers and at least one operation 2 + X X – 4 3N

  7. Example 6-4b Vocabulary Evaluate To find the numerical value of an expression

  8. Lesson 6 Contents Example 1Evaluate Algebraic Expressions Example 2Evaluate Algebraic Expressions Example 3Evaluate an Algebraic Expression Example 4Evaluate an Algebraic Expression

  9. Evaluate Example 6-1a 20 - c Write the expression 20 - 5 Replace c with 5. 15 Subtract 5 from 20. Answer: 15 1/4

  10. Evaluate Example 6-1b Answer: 16 1/4

  11. Evaluate Example 6-2a p + q Write expression 14 + 13 Replace p with 14 27 Replace q with 13. Add 14 and 13. Answer: 27 2/4

  12. Evaluate Example 6-2b Answer: 5 2/4

  13. Evaluate Example 6-3a 2x - 3 Write expression Replace x with 4 2(4) - 3 Follow Order of Operations Rules 8 - 3 P E MD AS Multiply 2(4) 5 Bring down - 3 Subtract 3 from 8 Answer: 5 3/4

  14. Evaluate Example 6-3b Answer: 25 3/4

  15. MULTIPLE-CHOICE TEST ITEMFind the value of Example 6-4a  A 24 B 36 C 48 D 144 6a + 4  3 Write expression 6(2) + 4  3 Replace a with 2 Follow Order of Operations Rules 12 + 12 P E MD AS Multiply 6(2) Bring down + Multiply 4  3 4/4

  16. MULTIPLE-CHOICE TEST ITEMFind the value of Example 6-4a A 24 B 36 C 48 D 144 6a + 4  3 Add 12 + 12 6(2) + 4  3 Choose the appropriate multiple choice answer 12 + 12 24 Answer: A 4/4

  17. MULTIPLE-CHOICE TEST ITEMFind the value of the expression Example 6-4b * A 11 B 15 C21 D 47 Answer: B 4/4

  18. End of Lesson 6 Assignment

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