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Brain Warm – Up

Brain Warm – Up. Find 34 ˚C using the formula: Exit Slip from Yesterday… Turn in when finished. Solving for Equations and Inequalities. January 11, 2012 Ms. Latimer. Vocabulary. Inverse Operations – Operations that “undo” each other, such as +/- or x/ ÷ How does addition undo subtraction?

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Brain Warm – Up

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  1. Brain Warm – Up • Find 34˚C using the formula: • Exit Slip from Yesterday… Turn in when finished

  2. Solving for Equations and Inequalities January 11, 2012 Ms. Latimer

  3. Vocabulary • Inverse Operations – Operations that “undo” each other, such as +/- or x/÷ • How does addition undo subtraction? • How does division undo multiplication?

  4. More New Knowledge Check it out… Algebraic Tiles

  5. Examples: Solving + Equations 1.) x + 2 = 12 2.) 4 + x = 16 3.) 20 = x + 9

  6. Examples: Solving - Problems 1.) x - 2 = 8 2.) 13 = n - 5 3.) m – 3.1 = 11.95

  7. Example: Solving x Problems 1.) 5x = 35 2.) 26 = 2n 3.) 4m = 24

  8. Example: Solving ÷ Problems 1) 2) 3)

  9. 17 – n = 2 = 7 9n = 45 * n + 3 ≤ 6 Use the inverse property Show the changes to EACH side!!! Answer must be stated with a variable Ex: w = 3 Ex: t ≥ 5 Useable Knowledge

  10. Practice Practice Practice!!! • Team consult! • Teams of 4 to 5 students • Solve problems together (each on own paper) • Send a representative to the board to write your answer.

  11. Push In Your Chairs! • Agendas: PB pg 87 # 4 -16 choose 4 PB pg 89 # 7 – 18 choose 4 • What did you learn today? • What is still difficult? • What do you still have questions about? • What do you understand? • What do you like the most?

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