Let’s solve each addition problem step by step. We’ll add the numbers in each column, starting from the right (ones place), and carry over if needed.
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First row:
1.
59 + 98
- Ones: 9 + 8 = 17 → write down 7, carry 1
- Tens: 5 + 9 = 14, plus carried 1 = 15 → write down 15
→
157
2.
87 + 86
- Ones: 7 + 6 = 13 → write down 3, carry 1
- Tens: 8 + 8 = 16, plus carried 1 = 17 → write down 17
→
173
3.
68 + 79
- Ones: 8 + 9 = 17 → write down 7, carry 1
- Tens: 6 + 7 = 13, plus carried 1 = 14 → write down 14
→
147
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Second row:
4.
76 + 65
- Ones: 6 + 5 = 11 → write down 1, carry 1
- Tens: 7 + 6 = 13, plus carried 1 = 14 → write down 14
→
141
5.
56 + 58
- Ones: 6 + 8 = 14 → write down 4, carry 1
- Tens: 5 + 5 = 10, plus carried 1 = 11 → write down 11
→
114
6.
94 + 48
- Ones: 4 + 8 = 12 → write down 2, carry 1
- Tens: 9 + 4 = 13, plus carried 1 = 14 → write down 14
→
142
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Third row:
7.
89 + 36
- Ones: 9 + 6 = 15 → write down 5, carry 1
- Tens: 8 + 3 = 11, plus carried 1 = 12 → write down 12
→
125
8.
79 + 25
- Ones: 9 + 5 = 14 → write down 4, carry 1
- Tens: 7 + 2 = 9, plus carried 1 = 10 → write down 10
→
104
9.
69 + 17
- Ones: 9 + 7 = 16 → write down 6, carry 1
- Tens: 6 + 1 = 7, plus carried 1 = 8 → write down 8
→
86
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Fourth row:
10.
54 + 08
- Ones: 4 + 8 = 12 → write down 2, carry 1
- Tens: 5 + 0 = 5, plus carried 1 = 6 → write down 6
→
62
11.
49 + 98
- Ones: 9 + 8 = 17 → write down 7, carry 1
- Tens: 4 + 9 = 13, plus carried 1 = 14 → write down 14
→
147
12.
35 + 87
- Ones: 5 + 7 = 12 → write down 2, carry 1
- Tens: 3 + 8 = 11, plus carried 1 = 12 → write down 12
→
122
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Final Answer:
157, 173, 147, 141, 114, 142, 125, 104, 86, 62, 147, 122
Parent Tip: Review the logic above to help your child master the concept of 2 digit regrouping worksheet.
