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Agenda. Warm up My favorite mistake Lesson 5 hw corrections lesson 6: subtracting real numbers Exit card. Warm-up. Find each sum. 1. (- 14.03) + (-3.2 ) 2. 25.2 + (-34.3). My favorite mistake. Find the sum. (-15.67) + 14.5 Answer: 15.67 -11.50 01.17.

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Agenda

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  1. Agenda Warm up My favorite mistake Lesson 5 hw corrections lesson 6: subtracting real numbers Exit card

  2. Warm-up • Find each sum. • 1. (-14.03) + (-3.2) • 2. 25.2 + (-34.3)

  3. My favorite mistake • Find the sum. • (-15.67) + 14.5 • Answer: 15.67 • -11.50 • 01.17

  4. Lesson 5 hw corrections

  5. Lesson 6: subtracting real numbers • Recall: What are the two cases for adding real numbers? • Case 1:Case 2: • Ex: Ex:

  6. All subtraction problems can be written as addition problems • KEEP, CHANGE, CHANGE • Find each difference. • Ex: (-13) – 8 Ex: (-32) – (-22)

  7. Find each difference • Ex: 4.5 – (-8.2) Ex:

  8. Determine whether each statement is true or false. Give a counterexample if false • Ex: The set of negative numbers is closed under subtraction • Ex: The set of rational numbers is closed under subtraction.

  9. Death valley is 282 feet below sea level. If Jon is standing in Death Valley and is 8 feet tall, what is the altitude at the top of Jon’s head?

  10. What to do next? • Exit Card with Name on it • Lesson 6 Homework: • A – G, ##1 – 8 All • **Due Wednesday**

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