Let’s solve each addition problem step by step. We’ll add the ones first, then tens, then hundreds — and regroup (carry over) when needed.
---
Problem 1: 523 + 128
- Ones: 3 + 8 = 11 → write down 1, carry 1 to tens
- Tens: 2 + 2 + 1 (carried) = 5
- Hundreds: 5 + 1 = 6
→ Answer:
651
---
Problem 2: 465 + 192
- Ones: 5 + 2 = 7
- Tens: 6 + 9 = 15 → write down 5, carry 1 to hundreds
- Hundreds: 4 + 1 + 1 (carried) = 6
→ Answer:
657
---
Problem 3: 289 + 204
- Ones: 9 + 4 = 13 → write down 3, carry 1 to tens
- Tens: 8 + 0 + 1 (carried) = 9
- Hundreds: 2 + 2 = 4
→ Answer:
493
---
Problem 4: 343 + 174
- Ones: 3 + 4 = 7
- Tens: 4 + 7 = 11 → write down 1, carry 1 to hundreds
- Hundreds: 3 + 1 + 1 (carried) = 5
→ Answer:
517
---
Problem 5: 617 + 289
- Ones: 7 + 9 = 16 → write down 6, carry 1 to tens
- Tens: 1 + 8 + 1 (carried) = 10 → write down 0, carry 1 to hundreds
- Hundreds: 6 + 2 + 1 (carried) = 9
→ Answer:
906
---
Problem 6: 592 + 329
- Ones: 2 + 9 = 11 → write down 1, carry 1 to tens
- Tens: 9 + 2 + 1 (carried) = 12 → write down 2, carry 1 to hundreds
- Hundreds: 5 + 3 + 1 (carried) = 9
→ Answer:
921
---
Final Answer:
1. 651
2. 657
3. 493
4. 517
5. 906
6. 921
Parent Tip: Review the logic above to help your child master the concept of adding with regrouping worksheet.
