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Adding integers

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Intros
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Lessons
  1. Introduction to Adding Integers
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Examples
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Lessons
  1. What addition statement does each of the following diagrams represent? Then, find the sum.

    1. Adding integers using a number line

    2. Representing integers addition on a number line

    3. Adding integers with number line
  2. Use a number line to add.
    1. (+2) + (+4) =
    2. (+10) + (-7) =
    3. (-8) + (-3) =
    4. (-6) + (+5) =
  3. The temperature in city A was +28°C. The temperature then dropped by 13°C at midnight. What was the final temperature?
  4. A diver was diving 2 m under the water. He descended 8 m and then ascended 4 m. What was his final depth under the water?
  5. Adding 1-digit Numbers Vertically – Same Signs
    Add the following numbers vertically.
    1. (+2)+(+4)(+2)+(+4)
    2. (−5)+(−3)(-5)+(-3)
    3. (+8)+(+6)(+8)+(+6)
    4. (−9)+(−4)(-9)+(-4)
  6. Adding 1-digit Numbers Vertically – Opposite Signs
    Add the following numbers vertically.
    1. (−7)+(+1)(-7)+(+1)
    2. (−7)+(+9)(-7)+(+9)
    3. (+5)+(−2)(+5)+(-2)
    4. (+5)+(−8)(+5)+(-8)
  7. Adding 2-digit Numbers Vertically
    Add the following numbers vertically.
    1. (+36)+(+28)(+36)+(+28)
    2. (−39)+(−54)(-39)+(-54)
    3. (+12)+(−43)(+12)+(-43)
    4. (−22)+(+63)(-22)+(+63)