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Do Now 8/16

Do Now 8/16. Please do this on a separate sheet of paper, not in a journal. You will need two pieces of paper today. 12 – 7 = ___ 7 – 12 = ___ Is your answer to question (a) and (b) the same? Why or why not?

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Do Now 8/16

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  1. Do Now 8/16 Please do this on a separate sheet of paper, not in a journal. You will need two pieces of paper today. • 12 – 7 = ___ • 7 – 12 = ___ • Is your answer to question (a) and (b) the same? Why or why not? • WITHOUT solving this problem, HOW do you know if the answer is positive or negative? 534 – 944 = ____

  2. Absolute Value August 16, 2013

  3. Agenda • Learning Goal: I can explain how and when to use absolute value. • Do Now • How Old is Tiger Woods? • Absolute Value Quickwrite & Practice

  4. 4 units 4 units –5 –4 –3 –2 –1 0 1 2 3 4 5 A number’s absolute value is its distance from 0 on a number line. |–4| = |4| =

  5. 4 units 4 units –5 –4 –3 –2 –1 0 1 2 3 4 5 A number’s absolute value is its distance from 0 on a number line. |–4| = 4 |4| = 4

  6. Try these problems: • |-100| = • |33| = • |3 - 12| = • |12 – 3| =

  7. Is it the same? • Look at your Do Now. We said that 12 – 7 = 5 and that 7 – 12 = -5. • What about |12 – 7| and |7 – 12|? Will the answers be the same? • What about 7 – 12 and|7 – 12|? Will the answers be the same?

  8. Make 4 Columns • Fold your paper in half twice hot dog style and label your columns

  9. Guess their Ages • Guess the age of each celebrity. • Write down their NAME and your GUESS in the appropriate column.

  10. Tiger Woods Age ?

  11. Ellen Degeneres Age ?

  12. Jennifer Lawrence Age ?

  13. Oprah Winfrey Age ?

  14. Leonardo DiCaprio Age ?

  15. Barry Bonds Age ?

  16. Regis Philbin Age ?

  17. Jeremy Lin Age ?

  18. Martha Stewart Age ?

  19. George W. Bush Age ?

  20. Bill Gates Age ?

  21. J. K. Rowling Age ?

  22. Barack Obama Age ?

  23. Michelle Obama Age ?

  24. Their Actual Ages!

  25. Tiger Woods Age 37

  26. Ellen Degeneres Age 55

  27. Jennifer Lawrence Age 22

  28. Oprah Winfrey Age 59

  29. Leonardo DiCaprio Age 38

  30. Barry Bonds Age 49

  31. Regis Philbin Age 81

  32. Jeremy Lin Age 24

  33. Martha Stewart Age 72

  34. George W. Bush Age 67

  35. Bill Gates Age 57

  36. J. K. Rowling Age 48

  37. Barack Obama Age 52

  38. Michelle Obama Age 49

  39. Who’s the best guesser? • How can we calculate who is the best guesser?

  40. Exit Ticket: True or False: If two numbers are opposites, then they have the same absolute value. Give me an example of why you picked true or false..

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