2-Digit Plus 2-Digit Addition Worksheet (A) - Math Practice Problems
A worksheet titled "2-Digit Plus 2-Digit Addition (A)" with multiple addition problems, including numbers like 95 + 13, 28 + 99, and 55 + 63, designed for math practice.
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Step-by-step solution for: Free Math Worksheets by Math-Drills
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Step-by-step solution for: Free Math Worksheets by Math-Drills
The image you uploaded is a worksheet titled "2-Digit Plus 2-Digit Addition (A)." It contains multiple addition problems where each problem involves adding two 2-digit numbers. Below, I will solve the problems step by step and explain the solution process.
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The worksheet is organized into rows and columns, with each cell containing a pair of 2-digit numbers to be added. The task is to calculate the sum for each pair.
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To solve each addition problem:
1. Align the numbers vertically so that the ones place and tens place are in the same column.
2. Add the digits in the ones place first.
3. If the sum in the ones place is 10 or more, carry over the tens digit to the tens place.
4. Add the digits in the tens place, including any carry-over from the ones place.
5. Write down the final sum.
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#### First Row:
1. 95 + 13
- Ones place: \( 5 + 3 = 8 \)
- Tens place: \( 9 + 1 = 10 \)
- Sum: 108
2. 28 + 99
- Ones place: \( 8 + 9 = 17 \) (carry over 1)
- Tens place: \( 2 + 9 + 1 = 12 \)
- Sum: 127
3. 11 + 59
- Ones place: \( 1 + 9 = 10 \) (carry over 1)
- Tens place: \( 1 + 5 + 1 = 7 \)
- Sum: 70
4. 45 + 32
- Ones place: \( 5 + 2 = 7 \)
- Tens place: \( 4 + 3 = 7 \)
- Sum: 77
5. 25 + 30
- Ones place: \( 5 + 0 = 5 \)
- Tens place: \( 2 + 3 = 5 \)
- Sum: 55
#### Second Row:
6. 33 + 53
- Ones place: \( 3 + 3 = 6 \)
- Tens place: \( 3 + 5 = 8 \)
- Sum: 86
7. 53 + 62
- Ones place: \( 3 + 2 = 5 \)
- Tens place: \( 5 + 6 = 11 \)
- Sum: 115
8. 24 + 46
- Ones place: \( 4 + 6 = 10 \) (carry over 1)
- Tens place: \( 2 + 4 + 1 = 7 \)
- Sum: 70
9. 51 + 79
- Ones place: \( 1 + 9 = 10 \) (carry over 1)
- Tens place: \( 5 + 7 + 1 = 13 \)
- Sum: 130
10. 49 + 77
- Ones place: \( 9 + 7 = 16 \) (carry over 1)
- Tens place: \( 4 + 7 + 1 = 12 \)
- Sum: 126
#### Third Row:
11. 56 + 96
- Ones place: \( 6 + 6 = 12 \) (carry over 1)
- Tens place: \( 5 + 9 + 1 = 15 \)
- Sum: 152
12. 22 + 29
- Ones place: \( 2 + 9 = 11 \) (carry over 1)
- Tens place: \( 2 + 2 + 1 = 5 \)
- Sum: 51
13. 59 + 77
- Ones place: \( 9 + 7 = 16 \) (carry over 1)
- Tens place: \( 5 + 7 + 1 = 13 \)
- Sum: 136
14. 49 + 97
- Ones place: \( 9 + 7 = 16 \) (carry over 1)
- Tens place: \( 4 + 9 + 1 = 14 \)
- Sum: 146
15. 63 + 30
- Ones place: \( 3 + 0 = 3 \)
- Tens place: \( 6 + 3 = 9 \)
- Sum: 93
#### Fourth Row:
16. 72 + 70
- Ones place: \( 2 + 0 = 2 \)
- Tens place: \( 7 + 7 = 14 \)
- Sum: 142
17. 11 + 74
- Ones place: \( 1 + 4 = 5 \)
- Tens place: \( 1 + 7 = 8 \)
- Sum: 85
18. 69 + 12
- Ones place: \( 9 + 2 = 11 \) (carry over 1)
- Tens place: \( 6 + 1 + 1 = 8 \)
- Sum: 81
19. 95 + 49
- Ones place: \( 5 + 9 = 14 \) (carry over 1)
- Tens place: \( 9 + 4 + 1 = 14 \)
- Sum: 144
20. 80 + 54
- Ones place: \( 0 + 4 = 4 \)
- Tens place: \( 8 + 5 = 13 \)
- Sum: 134
#### Fifth Row:
21. 18 + 38
- Ones place: \( 8 + 8 = 16 \) (carry over 1)
- Tens place: \( 1 + 3 + 1 = 5 \)
- Sum: 56
22. 80 + 40
- Ones place: \( 0 + 0 = 0 \)
- Tens place: \( 8 + 4 = 12 \)
- Sum: 120
23. 41 + 21
- Ones place: \( 1 + 1 = 2 \)
- Tens place: \( 4 + 2 = 6 \)
- Sum: 62
24. 51 + 47
- Ones place: \( 1 + 7 = 8 \)
- Tens place: \( 5 + 4 = 9 \)
- Sum: 98
25. 61 + 46
- Ones place: \( 1 + 6 = 7 \)
- Tens place: \( 6 + 4 = 10 \)
- Sum: 107
---
Here are all the sums arranged in the same format as the worksheet:
| 95 + 13 | 28 + 99 | 11 + 59 | 45 + 32 | 25 + 30 |
|---------|---------|---------|---------|---------|
| 108 | 127 | 70 | 77 | 55 |
| 33 + 53 | 53 + 62 | 24 + 46 | 51 + 79 | 49 + 77 |
|---------|---------|---------|---------|---------|
| 86 | 115 | 70 | 130 | 126 |
| 56 + 96 | 22 + 29 | 59 + 77 | 49 + 97 | 63 + 30 |
|---------|---------|---------|---------|---------|
| 152 | 51 | 136 | 146 | 93 |
| 72 + 70 | 11 + 74 | 69 + 12 | 95 + 49 | 80 + 54 |
|---------|---------|---------|---------|---------|
| 142 | 85 | 81 | 144 | 134 |
| 18 + 38 | 80 + 40 | 41 + 21 | 51 + 47 | 61 + 46 |
|---------|---------|---------|---------|---------|
| 56 | 120 | 62 | 98 | 107 |
Thus, the final answer is:
\[
\boxed{
\begin{array}{ccccc}
108 & 127 & 70 & 77 & 55 \\
86 & 115 & 70 & 130 & 126 \\
152 & 51 & 136 & 146 & 93 \\
142 & 85 & 81 & 144 & 134 \\
56 & 120 & 62 & 98 & 107 \\
\end{array}
}
\]
---
Worksheet Layout
The worksheet is organized into rows and columns, with each cell containing a pair of 2-digit numbers to be added. The task is to calculate the sum for each pair.
---
Solution Process
To solve each addition problem:
1. Align the numbers vertically so that the ones place and tens place are in the same column.
2. Add the digits in the ones place first.
3. If the sum in the ones place is 10 or more, carry over the tens digit to the tens place.
4. Add the digits in the tens place, including any carry-over from the ones place.
5. Write down the final sum.
---
Solutions
#### First Row:
1. 95 + 13
- Ones place: \( 5 + 3 = 8 \)
- Tens place: \( 9 + 1 = 10 \)
- Sum: 108
2. 28 + 99
- Ones place: \( 8 + 9 = 17 \) (carry over 1)
- Tens place: \( 2 + 9 + 1 = 12 \)
- Sum: 127
3. 11 + 59
- Ones place: \( 1 + 9 = 10 \) (carry over 1)
- Tens place: \( 1 + 5 + 1 = 7 \)
- Sum: 70
4. 45 + 32
- Ones place: \( 5 + 2 = 7 \)
- Tens place: \( 4 + 3 = 7 \)
- Sum: 77
5. 25 + 30
- Ones place: \( 5 + 0 = 5 \)
- Tens place: \( 2 + 3 = 5 \)
- Sum: 55
#### Second Row:
6. 33 + 53
- Ones place: \( 3 + 3 = 6 \)
- Tens place: \( 3 + 5 = 8 \)
- Sum: 86
7. 53 + 62
- Ones place: \( 3 + 2 = 5 \)
- Tens place: \( 5 + 6 = 11 \)
- Sum: 115
8. 24 + 46
- Ones place: \( 4 + 6 = 10 \) (carry over 1)
- Tens place: \( 2 + 4 + 1 = 7 \)
- Sum: 70
9. 51 + 79
- Ones place: \( 1 + 9 = 10 \) (carry over 1)
- Tens place: \( 5 + 7 + 1 = 13 \)
- Sum: 130
10. 49 + 77
- Ones place: \( 9 + 7 = 16 \) (carry over 1)
- Tens place: \( 4 + 7 + 1 = 12 \)
- Sum: 126
#### Third Row:
11. 56 + 96
- Ones place: \( 6 + 6 = 12 \) (carry over 1)
- Tens place: \( 5 + 9 + 1 = 15 \)
- Sum: 152
12. 22 + 29
- Ones place: \( 2 + 9 = 11 \) (carry over 1)
- Tens place: \( 2 + 2 + 1 = 5 \)
- Sum: 51
13. 59 + 77
- Ones place: \( 9 + 7 = 16 \) (carry over 1)
- Tens place: \( 5 + 7 + 1 = 13 \)
- Sum: 136
14. 49 + 97
- Ones place: \( 9 + 7 = 16 \) (carry over 1)
- Tens place: \( 4 + 9 + 1 = 14 \)
- Sum: 146
15. 63 + 30
- Ones place: \( 3 + 0 = 3 \)
- Tens place: \( 6 + 3 = 9 \)
- Sum: 93
#### Fourth Row:
16. 72 + 70
- Ones place: \( 2 + 0 = 2 \)
- Tens place: \( 7 + 7 = 14 \)
- Sum: 142
17. 11 + 74
- Ones place: \( 1 + 4 = 5 \)
- Tens place: \( 1 + 7 = 8 \)
- Sum: 85
18. 69 + 12
- Ones place: \( 9 + 2 = 11 \) (carry over 1)
- Tens place: \( 6 + 1 + 1 = 8 \)
- Sum: 81
19. 95 + 49
- Ones place: \( 5 + 9 = 14 \) (carry over 1)
- Tens place: \( 9 + 4 + 1 = 14 \)
- Sum: 144
20. 80 + 54
- Ones place: \( 0 + 4 = 4 \)
- Tens place: \( 8 + 5 = 13 \)
- Sum: 134
#### Fifth Row:
21. 18 + 38
- Ones place: \( 8 + 8 = 16 \) (carry over 1)
- Tens place: \( 1 + 3 + 1 = 5 \)
- Sum: 56
22. 80 + 40
- Ones place: \( 0 + 0 = 0 \)
- Tens place: \( 8 + 4 = 12 \)
- Sum: 120
23. 41 + 21
- Ones place: \( 1 + 1 = 2 \)
- Tens place: \( 4 + 2 = 6 \)
- Sum: 62
24. 51 + 47
- Ones place: \( 1 + 7 = 8 \)
- Tens place: \( 5 + 4 = 9 \)
- Sum: 98
25. 61 + 46
- Ones place: \( 1 + 6 = 7 \)
- Tens place: \( 6 + 4 = 10 \)
- Sum: 107
---
Final Answer
Here are all the sums arranged in the same format as the worksheet:
| 95 + 13 | 28 + 99 | 11 + 59 | 45 + 32 | 25 + 30 |
|---------|---------|---------|---------|---------|
| 108 | 127 | 70 | 77 | 55 |
| 33 + 53 | 53 + 62 | 24 + 46 | 51 + 79 | 49 + 77 |
|---------|---------|---------|---------|---------|
| 86 | 115 | 70 | 130 | 126 |
| 56 + 96 | 22 + 29 | 59 + 77 | 49 + 97 | 63 + 30 |
|---------|---------|---------|---------|---------|
| 152 | 51 | 136 | 146 | 93 |
| 72 + 70 | 11 + 74 | 69 + 12 | 95 + 49 | 80 + 54 |
|---------|---------|---------|---------|---------|
| 142 | 85 | 81 | 144 | 134 |
| 18 + 38 | 80 + 40 | 41 + 21 | 51 + 47 | 61 + 46 |
|---------|---------|---------|---------|---------|
| 56 | 120 | 62 | 98 | 107 |
Thus, the final answer is:
\[
\boxed{
\begin{array}{ccccc}
108 & 127 & 70 & 77 & 55 \\
86 & 115 & 70 & 130 & 126 \\
152 & 51 & 136 & 146 & 93 \\
142 & 85 & 81 & 144 & 134 \\
56 & 120 & 62 & 98 & 107 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of basic math problems.