# Use a formal written algorithm to record addition and subtraction calculations involving two-, three-, four- and five-digit numbers

1. | Add Board: 60 + 23 | |

2. | Add Board: 30 + 70 | |

3. | Add Board: 40 + 60 | |

4. | Add Board: 63 + 20 | |

5. | On the board 13 + 15 = ? | |

6. | On the board 12 + 13 = ? | |

7. | On the board 14 + 12 = ? | |

8. | On the board 18 + 11 = ? | |

9. | On the board 15 + 14 = ? | |

10. | On the board 963 + 5 = ? | |

11. | On the board 242 + 6 = ? | |

12. | On the board 781 + 8 = ? | |

13. | On the board 427 + 2 = ? | |

14. | On the board 113 + 4 = ? | |

15. | On The Board 135+100 | |

16. | On The Board 254+100 | |

17. | On The Board 458+100 | |

18. | On The Board 765+100 | |

19. | On The Board 553+100 | |

20. | Add it up: Addition with trading 52+9 | |

21. | Add it up: Addition with trading 46+8 | |

22. | Add it up: Addition with trading 22+5 | |

23. | Add it up: Addition with trading 26+17 | |

24. | Add it up: Addition with trading 38+14 | |

25. | Add Board: 24 + 15 = ? | |

26. | Add Board: 45 + 34 = ? | |

27. | Add Board: 67 + 12 = ? | |

28. | Add Board: 32 + 65 = ? | |

29. | Add Board: 25 + 13 = ? | |

30. | Add it up: 69+23 | |

31. | Add it up: 46+26 | |

32. | Add it up: 37+24 | |

33. | Add it up: 58+34 | |

34. | Add it up: 28+25 | |

35. | Add It Up: Addition with regrouping 15+28 | |

36. | Add It Up: Addition with regrouping 29+16 | |

37. | Add It Up: Addition with regrouping 22+29 | |

38. | Add It Up: Addition with regrouping 54+28 | |

39. | Add It Up: Addition with regrouping 67+27 | |

40. | Add It Up: Addition with regrouping 246+8 | |

41. | Add It Up: Addition with regrouping 289+4 | |

42. | Add It Up: Addition with regrouping 545+8 | |

43. | Add It Up: Addition with regrouping 637+5 | |

44. | Add It Up: Addition with regrouping 124+7 | |

45. | Add board 152+40 | |

46. | Add board 122+46 | |

47. | Add board 173+26 | |

48. | Add board 164+33 | |

49. | Add board 163+32 | |

50. | On the Board 63 + 32 = ** | |

51. | On the Board 63 + 17 = ** | |

52. | Add It Up: Addition with regrouping 45 + 17 | |

53. | Add It Up: Addition with regrouping 63 + 28 | |

54. | Add It Up: Addition with regrouping 34 + 48 | |

55. | Add It Up: Addition with regrouping 29 + 52 | |

56. | Add It Up: Addition with regrouping 46 + 37 | |

57. | Add It Up: Addition with regrouping 63 + 27 | |

58. | Add It Up: Addition with regrouping 34 + 57 | |

59. | Add It Up: Addition with regrouping 34 + 57 | |

60. | Add It Up: Addition with regrouping 55 + 25 | |

61. | Add It Up: Addition with regrouping 28 + 43 | |

62. | Add It Up: Addition with regrouping 968+ 5 | |

63. | Add It Up: Addition with regrouping 457+7 | |

64. | Add It Up: Addition with regrouping 213+9 | |

65. | Add It Up: Addition with regrouping 518+6 | |

66. | Add It Up: Addition with regrouping 812+ 8 | |

67. | Add it up: Addition with regrouping 863+59 | |

68. | Add it up: Addition with regrouping 347+56 | |

69. | Add it up: Addition with regrouping 723+89 | |

70. | Takeaway board 87-53 | |

71. | Takeaway board 29-15 | |

72. | Takeaway board 45-21 | |

73. | Takeaway board 77-34 | |

74. | Takeaway board 18-12 | |

75. | Take it away: Subtraction with decomposition 63-9 | |

76. | Take it away: Subtraction with decomposition 45-8 | |

77. | Take it away: Subtraction with decomposition 51-5 | |

78. | Take it away: Subtraction with decomposition 43-7 | |

79. | Take it away: Subtraction with decomposition 34-8 | |

80. | Take it away: Subtraction with decomposition 62-8 | |

81. | Take it away: Subtraction with decomposition 41-6 | |

82. | Take it away: Subtraction with decomposition 63-9 | |

83. | Take it away: Subtraction with decomposition 45-7 | |

84. | Take it away: Subtraction with decomposition 56-9 | |

85. | Take it away: Subtraction with decomposition 45-9 | |

86. | Takeaway board: 65-34 | |

87. | Takeaway board: 48-26 | |

88. | Take it away: Subtraction with decomposition 24 - 18 | |

89. | Take it away: Subtraction with decomposition 52 - 36 | |

90. | Take it away: Subtraction with decomposition 43 - 26 | |

91. | Take it away: Subtraction with decomposition 46 - 28 | |

92. | Take it away: Subtraction with decomposition 71 - 52 | |

93. | Take it away: Subtraction with decomposition 53 - 28 | |

94. | Take it away: Subtraction with decomposition 61 - 13 | |

95. | Take it away: Subtraction with decomposition 25 - 16 | |

96. | Take it away: Subtraction with decomposition 33 - 18 | |

97. | Take it away: Subtraction with decomposition 46 - 27 | |

98. | Take it away 352-18=334 | |

99. | Take it away 472-46=426 | |

100. | Take it away 271-138 | |

101. | Take it away 692-459 | |

102. | Take it away 942-513 | |

103. | Take it away 794-387 | |

104. | Take it away 583-228 |