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11-5

11-5. Subtracting Integers. Course 1. Warm Up. Problem of the Day. Lesson Presentation. Subtracting Integers. 11-5. Course 1. Warm Up Find each sum. 1. –4 + 6 2. 5 + 12 3. –3 + 3 4. –8 + 9 Give the opposite of each number. 5. 7 6. –8 7. –3 8. 1. 2. 17. 1. 0.

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11-5

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  1. 11-5 Subtracting Integers Course 1 Warm Up Problem of the Day Lesson Presentation

  2. Subtracting Integers 11-5 Course 1 Warm Up Find each sum. 1.–4 + 6 2. 5 + 12 3. –3 + 3 4. –8 + 9 Give the opposite of each number. 5. 7 6. –8 7. –3 8. 1 2 17 1 0 8 –7 –1 3

  3. Subtracting Integers 11-5 Course 1 Problem of the Day Jamal knows his average score for 3 science tests. If he adds the average and the amount that each score differs from the average, what will his sum be? The average

  4. Subtracting Integers 11-5 Course 1 Learn to subtract integers.

  5. Subtracting Integers 11-5 Course 1

  6. Subtracting Integers 11-5 Course 1 Additional Example 1: Writing Integer Subtraction Write the subtraction modeled on each number line. A. B. –3 –4 –8 –7 – 6 –5 –4 –3 –2 –1 0 1 The subtraction modeled is –3 – 4 = –7. – (–9) (–5) –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 The addition modeled is –5 – (–9) = 4.

  7. Subtracting Integers 11-5 Course 1 Check It Out: Example 1 Write the subtraction modeled on each number line. A. B. –5 –2 –8 –7 – 6 –5 –4 –3 –2 –1 0 1 The subtraction modeled is –5 – 2 = –7. –(–5) (–3) –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 The addition modeled is –3 – (–5) = 2.

  8. Subtracting Integers 11-5 Course 1 Additional Example 2A: Subtracting Integers Find the difference. 4 – 6 (–6) 4 –3 –2 –1 0 1 2 3 4 5 4 – 6 = –2

  9. Subtracting Integers 11-5 –1 0 1 2 3 4 5 6 7 Course 1 Additional Example 2B: Subtracting Integers Find the difference. 3 – (–3) 3 –(–3) 3 – (–3) = 6

  10. Subtracting Integers 11-5 Course 1 Check It Out: Example 2A Find the difference. 2 – (–5) – (–5) 2 –1 0 1 2 3 4 5 6 7 2 – (–5) = 7

  11. Subtracting Integers 11-5 Course 1 Check It Out: Example 2B Find the difference. 3 – 6 (–6) 3 –3 –2 –1 0 1 2 3 4 5 3 – 6 = –3

  12. Subtracting Integers 11-5 Course 1 Additional Example 3: Evaluating Integer Expressions Evaluate a – 4 for a = 2. a – 4 Write the expression. 2 – 4 Substitute 2 for a. –2 Subtract.

  13. Subtracting Integers 11-5 Course 1 Check It Out: Example 3 Evaluate b – 6 for b= 8. b – 6 Write the expression. 8 – 6 Substitute 8 for b. 2 Subtract.

  14. Subtracting Integers 11-5 Course 1 Insert Lesson Title Here Lesson Quiz Find each difference. 1. 8 – 5 2. –9 – (–3) Evaluate x – (–7) for each value of x. 3.x = –2 4.x = 5 5. The peak of Mt. Everest is approximately 26,544 ft above sea level. The shore of the Dead Sea is about 1,200 ft below sea level. How much higher is the peak of Mt. Everest than the shore of the Dead Sea? 3 –6 12 5 27,744 ft

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