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B. Expression Evaluation

   a. To Add, Subtract, and Multiply
      1. Practice: Multiple-step Problems
      2. Addition and Subtraction
      3. Addition and Multiplication
      4. Addition and Multiplication (2)

   b. Powers
      5. Multiplication and Powers
      6. Negation and Powers
      7. Addition and Powers
      8. Order of Operations
      9. Order of Operations (2)

   c. Parentheses
      10. Evaluating Parentheses First
      11. Evaluating Parentheses First (2)
      12. Practice: Editing Steps
      13. Evaluating Parentheses First (3)

   d. Fractions
      14. Evaluating Fractions
      15. Fractions Inside Fractions

   e. Parentheses in Parentheses
      16. Parentheses Inside Parentheses
      17. Parentheses Inside Parentheses (2)

   f. Substitution and Evaluation
      18. Substituting Variables
      19. Substituting Using Dots
      20. Substituting Using Parentheses
      21. Substituting For Variables (2)
      22. Substituting For Variables (3)
      23. Substituting For Variables (4)



Examples

B. Expression Evaluation

   a. To Add, Subtract, and Multiply
      1. Practice: Multiple-step Problems


      2. Addition and Subtraction


      3. Addition and Multiplication


      4. Addition and Multiplication (2)



   b. Powers
      5. Multiplication and Powers


      6. Negation and Powers


      7. Addition and Powers


      8. Order of Operations


      9. Order of Operations (2)



   c. Parentheses
      10. Evaluating Parentheses First


      11. Evaluating Parentheses First (2)


      12. Practice: Editing Steps


      13. Evaluating Parentheses First (3)



   d. Fractions
      14. Evaluating Fractions


      15. Fractions Inside Fractions



   e. Parentheses in Parentheses
      16. Parentheses Inside Parentheses


      17. Parentheses Inside Parentheses (2)



   f. Substitution and Evaluation
      18. Substituting Variables


      19. Substituting Using Dots


      20. Substituting Using Parentheses


      21. Substituting For Variables (2)


      22. Substituting For Variables (3)


      23. Substituting For Variables (4)