Subtract bridge 10 8 -addition -fri-gr.4

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3 Second recall facts for subtraction bridge 10 minus 8 and all addition facts in powerpoint format-grade 4

Mental Math Strategy:
Subtraction Bridge 10-8
All Addition
Gr. 4

160 - 80 =

20 + 40 =

130 - 90 =

30 + 50 =

100 - 80 =

70 - 60 =

60 + 80 =

170 - 80 =

100 - 70 =

30 - 20 =

110 - 80 =

70 + 70 =

90 - 90 =

80 + 90 =

140 - 90 =

180 - 80 =

90 + 90 =

50 - 20 =

110 - 90 =

100 - 40 =

70 + 90 =

90 - 80 =

120 - 90 =

70 + 80 =

150 - 80 =

160 - 90 =

40 + 60 =

80 - 80 =

30 + 40 =

180 - 90 =

150 - 90 =

60 + 70 =

140 - 80 =

20 - 20 =

50 + 70 =

100 - 90 =

50 - 40 =

80 + 80=

130 - 80 =

100 - 60 =

190 - 90 =

50 + 60 =

120 - 80 =

40 + 50 =

170 - 90 =

Subtract bridge 10 8 -addition -fri-gr.4

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Subtract bridge 10 8 -addition -fri-gr.4

1. Mental Math Strategy: Subtraction Bridge 10-8 All Addition Gr. 4

3.

4. 20 + 40 =

5.

7.

8. 30 + 50 =

9.

10. 100 - 80 =

11.

12. 70 - 60 =

13.

14. 60 + 80 =

15.

16. 170 - 80 =

17.

18. 100 - 70 =

19.

20. 30 - 20 =

21.

22. 110 - 80 =

23.

24. 70 + 70 =

25.

26. 90 - 90 =

27.

28. 80 + 90 =

29.

30. 140 - 90 =

31.

32. 180 - 80 =

33.

34. 90 + 90 =

35.

36. 50 - 20 =

37.

38. 110 - 90 =

39.

40. 100 - 40 =

41.

42. 70 + 90 =

43.

44. 90 - 80 =

45.

46. 120 - 90 =

47.

48. 70 + 80 =

49.

50. 150 - 80 =

51.

52. 160 - 90 =

53.

54. 40 + 60 =

55.

56. 80 - 80 =

57.

58. 30 + 40 =

59.

60. 180 - 90 =

61.

62. 150 - 90 =

63.

64. 60 + 70 =

65.

66. 140 - 80 =

67.

68. 20 - 20 =

69.

70. 50 + 70 =

71.

72. 100 - 90 =

73.

74. 50 - 40 =

75.

77.

78. 130 - 80 =

79.

80. 100 - 60 =

81.

82. 190 - 90 =

83.

84. 50 + 60 =

85.

86. 120 - 80 =

87.

88. 40 + 50 =

89.

90. 170 - 90 =