Let's solve each of the addition problems in the worksheet step by step. These are all two-digit numbers being added together, and we'll add them column by column (ones place first, then tens place), carrying over when necessary.
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1. 63 + 84
- Ones: 3 + 4 = 7
- Tens: 6 + 8 = 14 → write down 4, carry over 1
- Total:
147
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2. 44 + 97
- Ones: 4 + 7 = 11 → write down 1, carry over 1
- Tens: 4 + 9 + 1 (carry) = 14
- Total:
141
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3. 88 + 94
- Ones: 8 + 4 = 12 → write down 2, carry over 1
- Tens: 8 + 9 + 1 = 18
- Total:
182
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4. 56 + 73
- Ones: 6 + 3 = 9
- Tens: 5 + 7 = 12
- Total:
129
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5. 87 + 76
- Ones: 7 + 6 = 13 → write down 3, carry over 1
- Tens: 8 + 7 + 1 = 16
- Total:
163
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6. 68 + 37
- Ones: 8 + 7 = 15 → write down 5, carry over 1
- Tens: 6 + 3 + 1 = 10
- Total:
105
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7. 26 + 84
- Ones: 6 + 4 = 10 → write down 0, carry over 1
- Tens: 2 + 8 + 1 = 11
- Total:
110
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8. 42 + 99
- Ones: 2 + 9 = 11 → write down 1, carry over 1
- Tens: 4 + 9 + 1 = 14
- Total:
141
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9. 47 + 35
- Ones: 7 + 5 = 12 → write down 2, carry over 1
- Tens: 4 + 3 + 1 = 8
- Total:
82
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10. 64 + 77
- Ones: 4 + 7 = 11 → write down 1, carry over 1
- Tens: 6 + 7 + 1 = 14
- Total:
141
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11. 93 + 35
- Ones: 3 + 5 = 8
- Tens: 9 + 3 = 12
- Total:
128
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12. 66 + 73
- Ones: 6 + 3 = 9
- Tens: 6 + 7 = 13
- Total:
139
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13. 55 + 49
- Ones: 5 + 9 = 14 → write down 4, carry over 1
- Tens: 5 + 4 + 1 = 10
- Total:
104
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14. 73 + 96
- Ones: 3 + 6 = 9
- Tens: 7 + 9 = 16
- Total:
169
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15. 48 + 58
- Ones: 8 + 8 = 16 → write down 6, carry over 1
- Tens: 4 + 5 + 1 = 10
- Total:
106
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16. 38 + 87
- Ones: 8 + 7 = 15 → write down 5, carry over 1
- Tens: 3 + 8 + 1 = 12
- Total:
125
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17. 97 + 97
- Ones: 7 + 7 = 14 → write down 4, carry over 1
- Tens: 9 + 9 + 1 = 19
- Total:
194
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18. 86 + 49
- Ones: 6 + 9 = 15 → write down 5, carry over 1
- Tens: 8 + 4 + 1 = 13
- Total:
135
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19. 35 + 48
- Ones: 5 + 8 = 13 → write down 3, carry over 1
- Tens: 3 + 4 + 1 = 8
- Total:
83
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20. 46 + 69
- Ones: 6 + 9 = 15 → write down 5, carry over 1
- Tens: 4 + 6 + 1 = 11
- Total:
115
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✔ Final Answers:
1.
147
2.
141
3.
182
4.
129
5.
163
6.
105
7.
110
8.
141
9.
82
10.
141
11.
128
12.
139
13.
104
14.
169
15.
106
16.
125
17.
194
18.
135
19.
83
20.
115
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✔ Tip: Always remember to:
- Add the ones digits first.
- Carry over if the sum is 10 or more.
- Then add the tens digits (including any carry-over).
Let me know if you'd like this as a printable answer key!
Parent Tip: Review the logic above to help your child master the concept of math worksheet for 3rd grade addition.
