Using concrete objects and pictorial representations, including those involving numbers, quantities and measures

1. Use the Pattern: 4+0, +10, +20
2. Use the Pattern: 5+0, +10, +20
3. Use the Pattern: 7+0, +10, +20
4. Use the Pattern: 6+0, +10, +20
5. Use the Pattern: 3+0, +10, +20
6. Use the Pattern: 9+0, +10, +20
7. Add these 3 numbers: 14 + 5 + 2
8. Add these 3 numbers: 11 + 4 + 5
9. Add these 3 numbers: 13 + 7 + 6
10. Use the Pattern: 5+4,15+4,25+4
11. Use the Pattern: 6+4,16+4,26+4
12. Use the Pattern: 10+2,20+2,30+2
13. 100 Grid: Start at 15. Add 7
14. 100 Grid: Start at 28. Add 8
15. 100 Grid: Start at 14. What is 11 more?
16. 100 grid: 11 more than 33
17. 100 grid: Find 9 more than 27
18. The Chicken Story: seventeen + twelve
19. Same or Different? Click all boxes with answer 20
20. Now Add This! 34+11, 34+12
21. Now Add This! 19+20, 19+24
22. Now Add This! 26+21, 26+31
23. Now Add This! 52+20, 52+17
24. Now Add This! 33+19, 33+21
25. Addition Chains
26. Addition Chains
27. Addition Chains
28. Addition Chains
29. Addition Chains
30. Add three numbers: 14 + 7 + 3
31. Add three numbers: 10 + 12 + 8
32. Add three numbers: 20 + 10 + 20
33. Same or Different: Click all the boxes with the answer 26.
34. Same or Different: Click all the boxes with the answer 28.
35. 100 grid: Start at 73. Add 7.
36. 100 grid: Start at 45. Add 8.
37. 100 grid: Start at 26. Add 5.
38. 100 grid: Start at 68. Add 4.
39. 100 grid: Start at 52. Add 7.
40. Beyond 20: What is 6 more than 29?
41. Beyond 50: What is 4 more than 57?
42. Beyond 30: What is 4 more than 38?
43. Thinking in tens: Add 10, 19 to 19
44. Thinking in tens: Add 10, 11 to 14
45. Addition Chains: 4 + 5 + 5 + 2, 10 + 5 + 5 + 10
46. Addition Chains: 2 + 4 + 3 + 10, 12 + 1 + 2 + 7
47. Addition Chains: 4 + 5 + 6 + 8, 11 + 4 + 3+ 7
48. Add three numbers: 2 + 13 + 9
49. Add three numbers: 15 + 7 + 8
50. Add three numbers: 14 + 12 + 8
51. Add three numbers: 17 + 7 + 12
52. Add three numbers: 11 + 14 + 5
53. The 1 Family - Add 1, add 11 to 35
54. The 1 Family - Add 1, add 11 to 27
55. The 1 Family - Add 1, add 11 to 49
56. The 1 Family - Add 1, add 11 to 57
57. The 1 Family - Add 1, add 11 to 83
58. Same or different:19-12,2+5,3+4,33-26,16-8
59. Use the pattern: 8 - 4, - 3, - 2
60. Use the pattern: 6 - 6, - 5, - 4
61. 100 grid: 73-7
62. 100 grid: 48-9
63. 100 grid: 74-7
64. 100 grid: 82-8
65. 100 grid: 54-6
66. 100 grid: 61-5
67. 100 grid: 69 take away 11
68. 100 grid: 41 take away 6
69. 100 grid: 53 subtract 8
70. 100 grid: 32 take away 5
71. 100 grid: 76 take away 7
72. 100 grid: 54 take away 8
73. 100 grid: 64 take away 9
74. 100 grid: 84 take away 8
75. 100 grid: 46 take away 9
76. 100 grid: 23 take away 7
77. 100 grid: 71 take away 8
78. 100 grid: 34 take away 6
79. 100 grid: 77 take away 9
80. Subtract from 30: 30 - 20, 7 & 12
81. Subtract from 30: 30 - 15, 10 & 6
82. Subtract from 30: 30 - 11, 5 & 21
83. Subtract from 30: 30 - 8, 30 & 14
84. Subtract from 30: 30 - 17, 30 & 5
85. The 9 family: Take 9, 19 & 29 from 57
86. The 9 family: Take 9, 19 & 29 from 65
87. The 9 family: Take 9, 19 & 29 from 72
88. The 9 family: Take 9, 19 & 29 from 44
89. The 9 family: Take 9, 19 & 29 from 36
90. Subtract.chains 48 - 7 - 2 - 9, 35 - 4 - 3 - 8
91. Subtract.chains 47 - 4 - 3 - 7, 28 - 8 - 2 - 5
92. Subtract.chains 23 - 4 - 1 - 3, 36 - 5 - 2 - 6
93. Subtract.chains 28 - 5 - 2 - 10, 50 - 5 - 3 - 2
94. Subtraction chains 80-6-5-3, 70-4-2-5
95. Subtraction chains 30-9-2-5, 60-5-4-3
96. Subtraction chains 40-5-6-3, 50-9-2-8
97. Subtraction chains 90-3-5-3, 40-2-8-5
98. Subtraction chains 60-9-2-3, 50-3-6-10
99. The Chicken Story: sixty + eleven
100. The Chicken Story: forty + thirty
101. The Chicken Story: seventy-four - sixty-seven
102. The Chicken Story: forty-four - thirty-four
103. The Chicken Story: twenty-eight - twenty
104. The Chicken Story: fifty - forty-six
105. The Chicken Story: thirty - twenty-five
106. The Chicken Story: thirty-seven - thirty-four
107. The Chicken Story: twenty-four - twenty
108. The Chicken Story: sixty + thirty
109. The Chicken Story: seventy-nine - seventy-three
110. The Chicken Story: fifty + twenty