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Adding and Subtracting Integers

Learn how to add, subtract, multiply, and divide integers through engaging activities and examples. Practice with positive and negative numbers to enhance understanding.

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Adding and Subtracting Integers

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  1. Adding and Subtracting Integers

  2. 08/15/13 08/16/13 Observe, Question, Comment Adding and Subtracting Integers Adding and Subtracting Integers Reflection Warm-Up: 3L 3R

  3. Warm-Up • 7 – (-4) • -9 + 3 • -8 + (-5) • -5 - 2

  4. 08/15/13 08/16/13 Observe, Question, Comment Adding and Subtracting Integers Adding and Subtracting Integers Reflection Warm-Up: Standard: 3L 3R

  5. NS 1.2 Add, subtract, multiply, and divide rational numbers (integers) Content Standards

  6. 08/15/13 08/16/13 Observe, Question, Comment Adding and Subtracting Integers Adding and Subtracting Integers Reflection Warm-Up: Standard: Objective: 3L 3R

  7. To addand subtract integers. Math Link: You know how to compare and order positive and negative numbers. Now you will learn to add, subtract, multiply and divide them. Objective:

  8. The set of positive whole numbers, their opposites, and zero. (Ex: -2, -1, 0, +1, +2) Vocabulary:Integers -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

  9. 08/15/13 08/16/13 Observe, Question, Comment Adding and Subtracting Integers Adding and Subtracting Integers Reflection Warm-Up: Standard: Practice: Objective: Notes/Examples: 3L 3R

  10. Party or War? • The addition symbol does not always mean to ADD! • The subtraction symbol does not always mean to SUBTRACT!

  11. Problems to Write and Work on the Whiteboard [Party or War?]

  12. Think of a PARTY when integers have the SAME SIGN . . . • Is it a positive or negative party? 2. ADD the integers.

  13. Think of a WAR when integers have DIFFERENT SIGNS . . . • Who will win? Is there more positives or negatives? • SUBTRACT the two integers. 3. Remember your sign!

  14. You Do: Adding Integers • -4 + -4 (2) +7 + -8 (3) +1 + -7 (4) +3 + -6 (5) -2 + -3 (6) 0 + -7 (7) -6 + +2 (8) -4 + -5 (9) +2 + -4

  15. You Do: Adding Integers (1) -8 (2) -1 (3) -6 (4) -3 (5) -5 (6) -7 (7) -4 (8) -9 (9) -2

  16. You Do: Subtracting Integers 1) 8 – 8 2) 8– 10 3) 0– 7 4) -5– 1 5) -2 – 2 6) 0– (-4) 7) -6 – 0 8) 2 – (-6) 9) (-3) – (-9) 10) -12 – (-7) 11) 10– (-4)

  17. You Do: Subtracting Integers (1) 0 (2) -2 (3) -7 (4) -6 (5) -4 (6) +4 (7) -6 (8) +8 (9) +6 (10) -5 (11) +14

  18. 100 + -25 -80 + -112 +924 + -500 Big Number Practice

  19. You Do: Big Numbers • -756 + 398 • -756 + -398 • 3138 + -2149 • 3138 + +5149

  20. You Do: Big Numbers • -756 + 398 = -358 • -756 + -398 = -1154 • 3138 + -2149 = 989 • 3138 + +5149 = 8287

  21. 100 - -25 -80 - -112 +924 - -500 Big Number Practice

  22. You Do: Big Numbers • -756 - 398 • -756 - -398 • 3138 - -2149 • 3138 - +5149

  23. You Do: Big Numbers • -756 – 398= -1154 • -756 - -398= -358 • 3138 - -2149= 5287 • 3138 - +5149= - 2011

  24. Copy Homework Time[Due Next Meeting]

  25. Copy Homework Time[Due Next Meeting]

  26. Review 1. -7 + 12 2. 35 +(-1) 3. -10 + (-12) 4. -6 + -5 5. 0 + -6 6. 50 + (-2) 7. -31 + 3 8. 4 + (-12) 9. -23 + 8 10. -1928 + 524 11. 347 + (-19) 12. -3723 + -21

  27. Review 1. 5 2. 34 3. -22 4. -11 5. -6 6. 48 7. -28 8. -8 9. -15 10. -1404 11. 328 12. -3744

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