Step 2

Difficulty 2

1. True or False? 2+8 = 8+2
2. Word Wise: Double 6
3. Back to School: 5c + 15c + 7 c
4. Make 20: 7+4+?
5. Make 20: 11+5+?
6. Make 20: 8+9+?
7. Number Detectives: 10 + ? = 34
8. Same or Different? Click all boxes with answer 20
9. Adding tens: 42 + 10 = ?
10. Now Add This! 19+20, 19+24
11. 40s zone: Add on 5 to 36.
12. 40s zone: 37 plus 5
13. 40s zone: Add on 3 to 38
14. 50s zone: 49 plus 3
15. 50s zone: 4 more than 47
16. Bob's and Kai-ling's teams $16 + $7 = $?
17. Make 30: 10 + 11 + ? = 30
18. Make 30: 19 + 2 + ? = 30
19. Make 30: 20 + 10 + ? = 30
20. Make 30: 16 + 4 + ? = 30
21. Make 30: 18 + 3 + ? = 30
22. On the board 13 + 15 = ?
23. On the board 12 + 13 = ?
24. On the board 14 + 12 = ?
25. On the board 18 + 11 = ?
26. On the board 15 + 14 = ?
27. Changing numbers: 24 changes to 33
28. Changing numbers: 19 changes to 28
29. Changing numbers: 13 changes to 21
30. Changing numbers: 9 changes to 17
31. Changing numbers: 8 changes to 17
32. Number Detectives: ? + 7 = 30
33. Number Detectives: ? + 24 = 30
34. True or False?: 17 + 4 = 20
35. True or False?: 8 + 8 = 16
36. True or False?: 9 + 8 = 16
37. True or False?: 5 + 6 = 12
38. True or False?: 7 + 9 = 16
39. True or False?: 13 + 1 = 1 + 13
40. True or False?: 9 + 7 = 17
41. Number Detectives: 10 + 20 = ?
42. Number Detectives: 22 + ? = 30
43. Number Detectives: 21 + ? = 30
44. Beyond 20: What is 6 more than 29?
45. Beyond 50: What is 4 more than 57?
46. Beyond 70: What is 8 more than 78?
47. Beyond 30: What is 4 more than 38?
48. Beyond 60: What is 5 more than 68?
49. Addition Chains: 10 + 4 + 6 + 2, 11 + 2 + 3 + 4
50. Addition Chains: 4 + 5 + 5 + 2, 10 + 5 + 5 + 10
51. Addition Chains: 2 + 4 + 3 + 10, 12 + 1 + 2 + 7
52. Addition Chains: 3 + 2 + 4 + 2, 7 + 2 + 3 + 4
53. Add three numbers: 14 + 12 + 8
54. Number detectives: ? - 6 = 3
55. Number detectives: ? - 7 = 2
56. Number detectives: 14 - 6 = ?
57. Number detectives: 15 - 9 = ?
58. Number detectives: 11 - 8 = ?
59. Number detectives: 13 - 5 = ?
60. Number detectives: 15 - 13 = ?
61. Write the missing number: 11 + ? + 2 = 20
62. Write the missing number: 6 + 9 + ? = 20
63. Takeaway board: 17-?=11
64. Takeaway board: 15-?=11
65. Takeaway board: 18-? = 12
66. Takeaway board: 16-? = 13
67. Takeaway board: 19-? = 14
68. 12 + 7 = 19 - so what else is true?
69. Put in the missing number: 5 + 4 + ? = 16
70. Put in the missing number: 11 + ? + 6 = 25
71. True or False?: 12 - 6 = 6
72. Subtraction Chain - 22-4=?-3=15
73. Subtraction Chain - ?-8=16-2=14
74. Subtraction Chain - 29-8=21-3=?
75. Subtraction Chain - 26-5=21-4=?
76. Subtraction Chain - ?-4=19-3=16
77. Mysteries of Thirty: 30-?=29, 30-?=24
78. Mysteries of Thirty: 30-?=21, 30-?=27
79. Mysteries of Thirty: 30-?=26, 30-?=22
80. True or False?: 16 - 8 = 8
81. True or False?: 23 - 5 = 18
82. True or False?: 19 - 6 = 12
83. True or False?: 16 - 9 = 7
84. Use the pattern 16-4=? 26-3=?, 36-4=?
85. Use the pattern 14-3=? 24-3=?, 34-3=?
86. Use the pattern 15-3=? 25-3=?, 35-3=?
87. Use the pattern 18-5=? 28-5=?, 38-5=?
88. 100 grid: 41 take away 6
89. 100 grid: 53 subtract 8
90. 100 grid: 32 take away 5
91. 100 grid: 84 take away 8
92. 100 grid: 46 take away 9
93. 100 grid: 77 take away 9
94. Subtract from 30: 30 - 20, 7 & 12
95. Subtract from 30: 30 - 15, 10 & 6
96. Subtract from 30: 30 - 11, 5 & 21
97. Subtract from 30: 30 - 8, 30 & 14
98. Subtract from 30: 30 - 17, 30 & 5
99. The 9 family: Take 9, 19 & 29 from 44
100. The 9 family: Take 9, 19 & 29 from 36
101. Subtract 8 from 17, 13 & 11
102. Subtract 6 from 13, 15 & 11
103. Subtract 7 from 24, 22 & 25
104. Subtract 5 from 21, 20 & 24
105. Subtract 9 from 12, 15 & 17
106. Spot the difference between 30 and 15.
107. Spot the difference between 12 and 25.
108. Spot the difference between 30 and 10.
109. Spot the difference between 40 and 10.
110. Count Down: 7 less than 52
111. Count Down: 6 less than 43
112. Count Down: 8 less than 47
113. Bargain Basement: $20 - $8
114. Spot the difference: 20 & 14, 17 & 9, 80 & 73
115. The Chicken Story: forty + thirty
116. The Chicken Story: sixty + thirty
117. The Chicken Story: seventy-nine - seventy-three
118. The Chicken Story: fifty + twenty
119. Kenny at the shop: $1 - 60c
120. Felicity at the shop: $1 - 45c
121. Jessie at the shop: $1 - 25c