# 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