1. 4 examples with counters 4 examples with number lines
Adding Integers
4 examples with counters
4 examples with number lines

2. Adding Integers Pictorially
Use coloured counters to represent each sum. Give each result.
(-2) + (-5)
(-7)

3. Adding Integers Pictorially
Use coloured counters to represent each sum. Give each result.
(+6) + (-6)
Identify Zeros…
(0)
Remove Zeros…
What is left?

4. Adding Integers Pictorially
Use coloured counters to represent each sum. Give each result.
(-5) + (+4)
Identify Zeros…
(-1)
Remove Zeros…
What is left?

5. Adding Integers Pictorially
Use coloured counters to represent each sum. Give each result.
(+4) + (-2)
Identify Zeros…
(+2)
Remove Zeros…
What is left?

6. Adding Integers Pictorially
Use a number line to add each pair of integers. Start at 0. Give each result.
(+3) + (+4)
Draw first integer starting at zero…
Draw second integer at the end of the first…
Where do you end up?
(+7)

7. Adding Integers Pictorially
Use a number line to add each pair of integers. Start at 0. Give each result.
(-2) + (-3)
Draw first integer starting at zero…
Draw second integer at the end of the first…
Where do you end up?
(-5)

8. Adding Integers Pictorially
Use a number line to add each pair of integers. Start at 0. Give each result.
(+6) + (-4)
Draw first integer starting at zero…
Draw second integer at the end of the first…
Where do you end up?
(+2)

9. Adding Integers Pictorially
Use a number line to add each pair of integers. Start at 0. Give each result.
(+5) + (-8)
Draw first integer starting at zero…
Draw second integer at the end of the first…
Where do you end up?
(-3)

10. Try Check Your Understanding Page 208 #’s 1-13
Adding Integers
Try Check Your Understanding
Page 208
#’s 1-13

11. = +1

12. = -2

13. (+ 6) + (- 4) = (+ 2)
(+ 3) + (+ 2) = (+ 5)
(- 7) + (+3) = (- 4)
(- 2) + (- 1) = (- 3)

14. (-1) + (- 3) = (- 4)
(- 4) + (+ 4) = (0)
(- 2) + (+6) = (+ 4)
(+1) + (- 5) = (- 4)

15. #5 Use coloured counters to model each sum
#5 Use coloured counters to model each sum. Draw pictures to record the steps
a) (+2) + (+7)
= (+9)

16. #5 Use coloured counters to model each sum
#5 Use coloured counters to model each sum. Draw pictures to record the steps
b) (-3) + (-5)
= (-8)

17. #5 Use coloured counters to model each sum
#5 Use coloured counters to model each sum. Draw pictures to record the steps
c) (-9) + (+3)
= (-6)
Identify Zeros…
Remove Zeros…
What is left?

18. #5 Use coloured counters to model each sum
#5 Use coloured counters to model each sum. Draw pictures to record the steps
d) (-4) + (+1)
= (-3)
Identify Zeros…
Remove Zeros…
What is left?

19. #5 Use coloured counters to model each sum
#5 Use coloured counters to model each sum. Draw pictures to record the steps
e) (-2) + (+2)
= (0)
Identify Zeros…
Remove Zeros…
What is left?

20. #5 Use coloured counters to model each sum
#5 Use coloured counters to model each sum. Draw pictures to record the steps
f) (+8) + (-2)
= (+6)
Identify Zeros…
Remove Zeros…
What is left?

21. #6 Use a number line to model each sum
= (-6)
Draw first integer starting at zero…
Draw second integer at the end of the first…
Where do you end up?

22. #6 Use a number line to model each sum
= (-6)
Draw first integer starting at zero…
Draw second integer at the end of the first…
Where do you end up?

23. #6 Use a number line to model each sum
= (+2)
Draw first integer starting at zero…
Draw second integer at the end of the first…
Where do you end up?

24. #6 Use a number line to model each sum
= (-8) -8
Draw first integer starting at zero…
Draw second integer at the end of the first…
Where do you end up?

25. #6 Use a number line to model each sum
= (+8) 8
Draw first integer starting at zero…
Draw second integer at the end of the first…
Where do you end up?

26. #6 Use a number line to model each sum
f) (+6) + (-2)
= (+4)
Draw first integer starting at zero…
Draw second integer at the end of the first…
Where do you end up?

27. + + - -

28. #8 Use mental arithmetic to find each sum. Explain your strategy.
(+6) + (-5)
(+1)

29. #8 Use mental arithmetic to find each sum. Explain your strategy.b)
(+5) + (-9)
(-4)

30. #8 Use mental arithmetic to find each sum. Explain your strategy.
(-5) + (-7)
(-12)

31. #8 Use mental arithmetic to find each sum. Explain your strategy.
(-3) + (-3)
(-6)

32. #8 Use mental arithmetic to find each sum. Explain your strategy.
(-7) + (+10)
(+3)

33. #8 Use mental arithmetic to find each sum. Explain your strategy.
(-9) + (+5)
(-4)

34. #9 Find each sum a)
(+7) + (+9)
(+16)

35. #9 Find each sum b)
(+18) + (-18)
(0)

36. #9 Find each sum c)
(-14) + (+14)
(0)

37. #9 Find each sum d)
(-53) + (+55)
(+2)

38. #9 Find each sum e)
(-20) + (-20)
(-40)

39. #9 Find each sum f)
(+100) + (-105)
(-5)

40. #10 Find each sum using any method
(-2) + (-3) + (-5)
(-10)

41. #10 Find each sum using any methodb)
(-6) + (+4) + (+7)
(+5)

42. #10 Find each sum using any method
(+8) + (+2) + (-5)
(+5)

43. #10 Find each sum using any method
(+7) + (+6) + (-13)
(0)

44. #10 Find each sum using any method
(-10) + (-7) + (+5)
(-12)

45. #10 Find each sum using any method
(-21) + (+17) + (-16)
(-20)

46. #10 Find each sum using any method
(+15) + (-5) + (+18)
(+28)

47. #10 Find each sum using any method
(-3) + (-4) + (+29)
(+22)

48. Let’s practice everything with an assignment!
Adding Integers
Let’s practice everything with an assignment!