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Intros
Lessons
  1. Introduction to Adding Integers
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Examples
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?
    1. 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?
      1. 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)
      2. 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)
      3. 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)
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      Practice