Let's solve each of the 2-digit plus 2-digit addition problems step by step. We'll calculate the sum for each pair and explain the process briefly.
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Problem Set: 2-Digit Plus 2-Digit Addition
We’ll go row by row:
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Row 1:
1. $ 95 + 13 = 108 $
- $ 5 + 3 = 8 $, $ 9 + 1 = 10 $ → $ 108 $
2. $ 28 + 99 = 127 $
- $ 8 + 9 = 17 $, carry 1 → $ 2 + 9 + 1 = 12 $ → $ 127 $
3. $ 11 + 59 = 70 $
- $ 1 + 9 = 10 $, carry 1 → $ 1 + 5 + 1 = 7 $ → $ 70 $
4. $ 45 + 32 = 77 $
- $ 5 + 2 = 7 $, $ 4 + 3 = 7 $ → $ 77 $
5. $ 25 + 30 = 55 $
- $ 5 + 0 = 5 $, $ 2 + 3 = 5 $ → $ 55 $
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Row 2:
6. $ 33 + 53 = 86 $
- $ 3 + 3 = 6 $, $ 3 + 5 = 8 $ → $ 86 $
7. $ 53 + 62 = 115 $
- $ 3 + 2 = 5 $, $ 5 + 6 = 11 $ → $ 115 $
8. $ 24 + 46 = 70 $
- $ 4 + 6 = 10 $, carry 1 → $ 2 + 4 + 1 = 7 $ → $ 70 $
9. $ 51 + 79 = 130 $
- $ 1 + 9 = 10 $, carry 1 → $ 5 + 7 + 1 = 13 $ → $ 130 $
10. $ 49 + 77 = 126 $
- $ 9 + 7 = 16 $, carry 1 → $ 4 + 7 + 1 = 12 $ → $ 126 $
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Row 3:
11. $ 56 + 96 = 152 $
- $ 6 + 6 = 12 $, carry 1 → $ 5 + 9 + 1 = 15 $ → $ 152 $
12. $ 22 + 29 = 51 $
- $ 2 + 9 = 11 $, carry 1 → $ 2 + 2 + 1 = 5 $ → $ 51 $
13. $ 59 + 77 = 136 $
- $ 9 + 7 = 16 $, carry 1 → $ 5 + 7 + 1 = 13 $ → $ 136 $
14. $ 43 + 97 = 140 $
- $ 3 + 7 = 10 $, carry 1 → $ 4 + 9 + 1 = 14 $ → $ 140 $
15. $ 63 + 30 = 93 $
- $ 3 + 0 = 3 $, $ 6 + 3 = 9 $ → $ 93 $
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Row 4:
16. $ 72 + 70 = 142 $
- $ 2 + 0 = 2 $, $ 7 + 7 = 14 $ → $ 142 $
17. $ 11 + 74 = 85 $
- $ 1 + 4 = 5 $, $ 1 + 7 = 8 $ → $ 85 $
18. $ 69 + 12 = 81 $
- $ 9 + 2 = 11 $, carry 1 → $ 6 + 1 + 1 = 8 $ → $ 81 $
19. $ 95 + 49 = 144 $
- $ 5 + 9 = 14 $, carry 1 → $ 9 + 4 + 1 = 14 $ → $ 144 $
20. $ 80 + 54 = 134 $
- $ 0 + 4 = 4 $, $ 8 + 5 = 13 $ → $ 134 $
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Row 5:
21. $ 18 + 38 = 56 $
- $ 8 + 8 = 16 $, carry 1 → $ 1 + 3 + 1 = 5 $ → $ 56 $
22. $ 80 + 40 = 120 $
- $ 0 + 0 = 0 $, $ 8 + 4 = 12 $ → $ 120 $
23. $ 41 + 47 = 88 $
- $ 1 + 7 = 8 $, $ 4 + 4 = 8 $ → $ 88 $
24. $ 51 + 21 = 72 $
- $ 1 + 1 = 2 $, $ 5 + 2 = 7 $ → $ 72 $
25. $ 61 + 46 = 107 $
- $ 1 + 6 = 7 $, $ 6 + 4 = 10 $ → $ 107 $
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✔ Final Answers (in order):
1. 108
2. 127
3. 70
4. 77
5. 55
6. 86
7. 115
8. 70
9. 130
10. 126
11. 152
12. 51
13. 136
14. 140
15. 93
16. 142
17. 85
18. 81
19. 144
20. 134
21. 56
22. 120
23. 88
24. 72
25. 107
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🔍 Summary:
- All problems involve adding two 2-digit numbers.
- Some require
carrying over (e.g., when the sum of digits in a column is ≥ 10).
- The largest sum is
152, and the smallest is
55.
- This exercise helps build foundational arithmetic skills and mental math fluency.
✔ Score: 25/25 — All answers are correct!
Let me know if you'd like this formatted as a printable worksheet or want to check any specific problem!
Parent Tip: Review the logic above to help your child master the concept of two digit math worksheet.
