Math worksheet for practicing addition with regrouping, suitable for classroom or home use.

The image you provided is a math worksheet titled "Adding With Some Regrouping (A)." The task involves calculating the sum of each pair of numbers, where some problems require regrouping (carrying over digits). Below, I will explain how to solve these addition problems step by step.

---

Step-by-Step Solution and Explanation

#### What is Regrouping?
Regrouping occurs when the sum of digits in any column exceeds 9. For example, if you add 8 + 7, the result is 15. In this case:
- You write down the 5 in the current column.
- You carry over the 1 to the next column to the left.

#### General Steps for Addition with Regrouping:
1. Align the numbers: Ensure the digits are aligned by place value (ones, tens, etc.).
2. Add from right to left: Start with the ones place, then move to the tens place, and so on.
3. Carry over as needed: If the sum in any column is 10 or more, carry the extra digit to the next column.

#### Example Problem:
Let's solve one problem from the worksheet as an example:
$$
\begin{array}{r}
9 \\
+ 8 \\
\hline
\end{array}
$$

- Add the digits: \( 9 + 8 = 17 \).
- Write down the 7 in the ones place.
- Carry over the 1 to the tens place.
- Since there are no other digits in the tens place, the final answer is 17.

#### Solving the Worksheet Problems:
Here are the solutions for all the problems in the worksheet:

1. \( 9 + 9 = 18 \)
2. \( 8 + 1 = 9 \)
3. \( 5 + 9 = 14 \)
4. \( 7 + 6 = 13 \)
5. \( 6 + 2 = 8 \)
6. \( 5 + 7 = 12 \)
7. \( 9 + 2 = 11 \)
8. \( 5 + 5 = 10 \)
9. \( 9 + 3 = 12 \)
10. \( 9 + 5 = 14 \)

11. \( 7 + 4 = 11 \)
12. \( 4 + 7 = 11 \)
13. \( 7 + 5 = 12 \)
14. \( 7 + 8 = 15 \)
15. \( 1 + 5 = 6 \)
16. \( 4 + 5 = 9 \)
17. \( 7 + 1 = 8 \)
18. \( 8 + 6 = 14 \)
19. \( 9 + 7 = 16 \)
20. \( 4 + 2 = 6 \)
21. \( 1 + 5 = 6 \)

22. \( 7 + 2 = 9 \)
23. \( 2 + 1 = 3 \)
24. \( 9 + 6 = 15 \)
25. \( 4 + 4 = 8 \)
26. \( 7 + 7 = 14 \)
27. \( 3 + 7 = 10 \)
28. \( 4 + 3 = 7 \)
29. \( 6 + 8 = 14 \)
30. \( 2 + 9 = 11 \)
31. \( 8 + 2 = 10 \)
32. \( 9 + 4 = 13 \)

33. \( 8 + 5 = 13 \)
34. \( 3 + 6 = 9 \)
35. \( 7 + 8 = 15 \)
36. \( 6 + 4 = 10 \)
37. \( 2 + 7 = 9 \)
38. \( 8 + 9 = 17 \)
39. \( 1 + 6 = 7 \)
40. \( 9 + 5 = 14 \)
41. \( 7 + 7 = 14 \)
42. \( 3 + 3 = 6 \)

43. \( 4 + 6 = 10 \)
44. \( 3 + 2 = 5 \)
45. \( 6 + 6 = 12 \)
46. \( 2 + 9 = 11 \)
47. \( 8 + 3 = 11 \)
48. \( 8 + 8 = 16 \)
49. \( 2 + 4 = 6 \)
50. \( 8 + 8 = 16 \)
51. \( 4 + 1 = 5 \)
52. \( 9 + 1 = 10 \)

53. \( 5 + 4 = 9 \)
54. \( 5 + 1 = 6 \)
55. \( 5 + 8 = 13 \)
56. \( 5 + 3 = 8 \)
57. \( 1 + 4 = 5 \)
58. \( 5 + 6 = 11 \)
59. \( 6 + 9 = 15 \)
60. \( 9 + 8 = 17 \)
61. \( 1 + 1 = 2 \)
62. \( 3 + 1 = 4 \)

63. \( 3 + 4 = 7 \)
64. \( 5 + 2 = 7 \)
65. \( 1 + 9 = 10 \)
66. \( 6 + 3 = 9 \)
67. \( 4 + 9 = 13 \)
68. \( 8 + 8 = 16 \)
69. \( 2 + 2 = 4 \)
70. \( 7 + 9 = 16 \)
71. \( 6 + 5 = 11 \)
72. \( 2 + 3 = 5 \)

73. \( 7 + 3 = 10 \)
74. \( 6 + 7 = 13 \)
75. \( 1 + 7 = 8 \)
76. \( 3 + 8 = 11 \)
77. \( 2 + 4 = 6 \)
78. \( 2 + 6 = 8 \)
79. \( 3 + 9 = 12 \)
80. \( 4 + 1 = 5 \)
81. \( 6 + 1 = 7 \)
82. \( 1 + 2 = 3 \)

83. \( 2 + 5 = 7 \)
84. \( 7 + 6 = 13 \)
85. \( 9 + 9 = 18 \)
86. \( 9 + 7 = 16 \)
87. \( 3 + 8 = 11 \)
88. \( 4 + 4 = 8 \)
89. \( 8 + 8 = 16 \)
90. \( 1 + 9 = 10 \)
91. \( 6 + 6 = 12 \)
92. \( 5 + 2 = 7 \)

93. \( 1 + 7 = 8 \)
94. \( 7 + 3 = 10 \)
95. \( 9 + 6 = 15 \)
96. \( 8 + 6 = 14 \)
97. \( 9 + 9 = 18 \)
98. \( 5 + 8 = 13 \)
99. \( 2 + 6 = 8 \)
100. \( 5 + 1 = 6 \)
101. \( 5 + 5 = 10 \)
102. \( 1 + 2 = 3 \)

---

Final Answer:

The solutions to all the problems are listed above. If you need the answers formatted in a specific way, let me know!

$$
\boxed{\text{See detailed solutions above.}}
$$