3.OA.8
Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.3
1. | Changing Numbers - 55 to 550 | |
2. | Changing Numbers - 74 to 740 | |
3. | Word Wise: Double 6 | |
4. | Make 20: 7+4+? | |
5. | Make 20: 11+5+? | |
6. | Make 20: 8+9+? | |
7. | Make 50: 20+10+? | |
8. | Make 50: 20+10+? | |
9. | Make 50: 20+10+? | |
10. | Make 50: 20+10+? | |
11. | Make 50: 20+10+? | |
12. | Double Up and Add: Double 6 plus 4 | |
13. | Double Up and Add: Double 10 plus 7 | |
14. | Double Up and Add: Double 9 plus 2 | |
15. | Changing numbers 136 to 140 | |
16. | Changing numbers 122 to 130 | |
17. | Changing numbers 154 to 160 | |
18. | Changing numbers 188 to 190 | |
19. | Changing numbers 177 to 180 | |
20. | Make 30: 10 + 11 + ? = 30 | |
21. | Make 50: 20+10+? | |
22. | Make 30: 19 + 2 + ? = 30 | |
23. | Make 30: 20 + 10 + ? = 30 | |
24. | Make 30: 16 + 4 + ? = 30 | |
25. | Make 30: 18 + 3 + ? = 30 | |
26. | Changing numbers: 24 changes to 33 | |
27. | Changing numbers: 19 changes to 28 | |
28. | Changing numbers: 13 changes to 21 | |
29. | Changing numbers: 9 changes to 17 | |
30. | Changing numbers: 8 changes to 17 | |
31. | Make 50: 40 + 4 + ? | |
32. | Make 36: 20 + 14 + ? | |
33. | Make 39: 30 + 6 + ? | |
34. | Make 37: 12 + 20 + 5 | |
35. | Make 34: 10 + 22 + ? | |
36. | Add three numbers: 14 + 12 + 8 | |
37. | Add three numbers: 11 + 14 + 5 | |
38. | Make 50: 39+7+? = 50 | |
39. | Make 50: 39+5+? = 50 | |
40. | Make 50: 35+5+? = 50 | |
41. | Make 50: 38+10+? = 50 | |
42. | Make 50: 42+6+? = 50 | |
43. | Changing Numbers 98 to 105 | |
44. | Changing Numbers 97 to 103 | |
45. | Changing Numbers 97 to 102 | |
46. | Changing Numbers 99 to 103 | |
47. | Changing Numbers 42 to 62 | |
48. | Changing Numbers 63 to 93 | |
49. | Changing Numbers 14 to 54 | |
50. | Changing Numbers 137 to 157 | |
51. | Changing Numbers 35 to 85 | |
52. | Number detectives 45+*=100 | |
53. | Number detectives 75+*=100 | |
54. | Number detectives 85+*=100 | |
55. | Number detectives 35+*=100 | |
56. | Number detectives 5+*=100 | |
57. | Spot the difference between 30 and 15. | |
58. | Spot the difference between 12 and 25. | |
59. | Spot the difference between 30 and 10. | |
60. | Spot the difference between 40 and 10. | |
61. | Spot the difference between 20 and 39. | |
62. | Spot the difference between 18 and 25. | |
63. | Spot the difference between 25 and 34. | |
64. | Spot the difference between 19 and 31. | |
65. | Spot the difference between 19 and 42. | |
66. | Spot the difference between 36 and 15. | |
67. | Write the missing number: 20 + 3 + ? = 30 | |
68. | Write the missing number: 12 + ? + 10 = 30 | |
69. | Write the missing number: 15 + ? + 5 = 30 | |
70. | Write the missing number: 9 + ? + 12 = 30 | |
71. | Write the missing number: ? + 5 + 4 = 30 | |
72. | Write the missing number: 15 + ? + 6 = 30 | |
73. | Write the missing number: 20 + 3 + ? = 30 | |
74. | Spot the difference: 60 & 40, 12 & 18, 100 & 95 | |
75. | Spot the difference: 20 & 14, 17 & 9, 80 & 73 | |
76. | Spot the difference: 100 & 30, 19 & 11, 30 & 24 | |
77. | Spot the difference: 50 & 41, 100 & 92, 101 & 98 | |
78. | Spot the difference: 102 & 97, 27 & 19, 100 & 60 | |
79. | Changing Numbers 55-37=? | |
80. | Changing Numbers 65-54=? | |
81. | Changing Numbers 48-22=? | |
82. | Changing Numbers 36-16=? | |
83. | Changing Numbers 51-28=? | |
84. | Changing Numbers 42-32=? | |
85. | Write the missing number: 7 + ? + 14 = 30 | |
86. | Write the missing number: 15 + 4 + ? = 30 | |
87. | Write the missing number: 12 + 10 + ? = 30 | |
88. | Write the missing number: 15 + 5 + ? = 30 | |
89. | Write the missing number: 18 + 8 + ? = 30 | |
90. | Write the missing number: 5 + 5 + ? = 30 | |
91. | Find first number: After I count back 5, the new number is 299. Where did I start? | |
92. | Find first number: After I count back 4, the new number is 197. Where did I start? | |
93. | Find first number: After I count back 6, the new number is 395. Where did I start? | |
94. | Find first number: After I count back 7, the new number is 596. Where did I start? | |
95. | Find first number: After I count back 8, the new number is 95. Where did I start? | |
96. | Double up: 2 x 3 | |
97. | Double up: 2 x 5 | |
98. | Double up: 2 x 6 | |
99. | Double up: 2 x 4 | |
100. | Double up: 2 x 7 | |
101. | Double up: Double 2 | |
102. | Double up: Double 8 | |
103. | Double up: Double 10 | |
104. | Double up: Double 6 | |
105. | Double up: Double 4 | |
106. | Number detectives: Product = 12, one number is 6. What is the other number? | |
107. | Number detectives: Product = 20, one number is 4. What is the other number? | |
108. | Number production: Put the correct ending on each multiplication sentence | |
109. | Double up: Double 15, 150 | |
110. | Double up: Double 35, 350 | |
111. | Double up: Double 16, 160 | |
112. | Double Up: Double 25, 250 | |
113. | Double Up: Double 9, 900 | |
114. | What Was I Thinking? - find original number after operations | |
115. | Enid the Elephant's Equations - equivalent to 8 + 4 | |
116. | Enid the Elephant's Equations - equivalent to 6 + 5 | |
117. | Enid the Elephant's Equations - equivalent to 7 + 7 | |
118. | Cards On The Table - select correct 2 cards | |
119. | The Chicken Story: forty + thirty | |
120. | The Chicken Story: sixty + thirty | |
121. | The Chicken Story: seventy-nine - seventy-three | |
122. | The Chicken Story: fifty + twenty | |
123. | 19 go to Waterworld: 5+4+3+? | |
124. | Make 50: 32+8+? = 50 | |
125. | N/D: Number halfway between 11 and 15 | |
126. | N/D: Number half-way between 7 and 11 | |
127. | N/D: Number halfway between 17 and 21 | |
128. | N/D: Number halfway between 23 and 27 | |
129. | Sum money: 4x5c + 1x10c | |
130. | Food Times: 5 children x 3 wieners |