Addition math worksheet with three-digit numbers on a grid background.
A grid-based math worksheet featuring addition problems with three-digit numbers, titled "Addition" at the top, from www.worksheetfun.com.
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Show Answer Key & Explanations
Step-by-step solution for: 3 Digit Addition With Regrouping - Carrying - 6 Worksheets / FREE ...
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Show Answer Key & Explanations
Step-by-step solution for: 3 Digit Addition With Regrouping - Carrying - 6 Worksheets / FREE ...
You've uploaded a worksheet titled “Addition” with 12 vertical addition problems, each involving the sum of two three-digit numbers. I’ll solve each one step by step and explain the process.
---
We add column by column from right to left (ones → tens → hundreds), carrying over any value ≥10 to the next column.
---
## 🔢 Problem-by-Problem Solutions:
---
```
996
+ 978
------
```
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 9 + 7 + 1 = 17 → write 7, carry 1
- Hundreds: 9 + 9 + 1 = 19 → write 19
✔ Answer: 1974
---
```
896
+ 968
------
```
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 9 + 6 + 1 = 16 → write 6, carry 1
- Hundreds: 8 + 9 + 1 = 18 → write 18
✔ Answer: 1864
---
```
795
+ 998
------
```
- Ones: 5 + 8 = 13 → write 3, carry 1
- Tens: 9 + 9 + 1 = 19 → write 9, carry 1
- Hundreds: 7 + 9 + 1 = 17 → write 17
✔ Answer: 1793
---
```
598
+ 958
------
```
- Ones: 8 + 8 = 16 → write 6, carry 1
- Tens: 9 + 5 + 1 = 15 → write 5, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1556
---
```
597
+ 938
------
```
- Ones: 7 + 8 = 15 → write 5, carry 1
- Tens: 9 + 3 + 1 = 13 → write 3, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1535
---
```
596
+ 928
------
```
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 9 + 2 + 1 = 12 → write 2, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1524
---
```
595
+ 968
------
```
- Ones: 5 + 8 = 13 → write 3, carry 1
- Tens: 9 + 6 + 1 = 16 → write 6, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1563
---
```
594
+ 978
------
```
- Ones: 4 + 8 = 12 → write 2, carry 1
- Tens: 9 + 7 + 1 = 17 → write 7, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1572
---
```
593
+ 998
------
```
- Ones: 3 + 8 = 11 → write 1, carry 1
- Tens: 9 + 9 + 1 = 19 → write 9, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1591
---
```
599
+ 978
------
```
- Ones: 9 + 8 = 17 → write 7, carry 1
- Tens: 9 + 7 + 1 = 17 → write 7, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1577
---
```
678
+ 543
------
```
- Ones: 8 + 3 = 11 → write 1, carry 1
- Tens: 7 + 4 + 1 = 12 → write 2, carry 1
- Hundreds: 6 + 5 + 1 = 12 → write 12
✔ Answer: 1221
---
```
876
+ 555
------
```
- Ones: 6 + 5 = 11 → write 1, carry 1
- Tens: 7 + 5 + 1 = 13 → write 3, carry 1
- Hundreds: 8 + 5 + 1 = 14 → write 14
✔ Answer: 1431
---
## 📋 Final Answers (in order):
1. 1974
2. 1864
3. 1793
4. 1556
5. 1535
6. 1524
7. 1563
8. 1572
9. 1591
10. 1577
11. 1221
12. 1431
---
## 💡 Tip for Students:
Always remember to carry over when a column adds up to 10 or more! Practice writing the carry number small above the next column to avoid mistakes.
Let me know if you’d like a printable version or want to check your own work against these! 😊
---
✔ General Method for Adding Three-Digit Numbers:
We add column by column from right to left (ones → tens → hundreds), carrying over any value ≥10 to the next column.
---
## 🔢 Problem-by-Problem Solutions:
---
1. 996 + 978
```
996
+ 978
------
```
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 9 + 7 + 1 = 17 → write 7, carry 1
- Hundreds: 9 + 9 + 1 = 19 → write 19
✔ Answer: 1974
---
2. 896 + 968
```
896
+ 968
------
```
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 9 + 6 + 1 = 16 → write 6, carry 1
- Hundreds: 8 + 9 + 1 = 18 → write 18
✔ Answer: 1864
---
3. 795 + 998
```
795
+ 998
------
```
- Ones: 5 + 8 = 13 → write 3, carry 1
- Tens: 9 + 9 + 1 = 19 → write 9, carry 1
- Hundreds: 7 + 9 + 1 = 17 → write 17
✔ Answer: 1793
---
4. 598 + 958
```
598
+ 958
------
```
- Ones: 8 + 8 = 16 → write 6, carry 1
- Tens: 9 + 5 + 1 = 15 → write 5, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1556
---
5. 597 + 938
```
597
+ 938
------
```
- Ones: 7 + 8 = 15 → write 5, carry 1
- Tens: 9 + 3 + 1 = 13 → write 3, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1535
---
6. 596 + 928
```
596
+ 928
------
```
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 9 + 2 + 1 = 12 → write 2, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1524
---
7. 595 + 968
```
595
+ 968
------
```
- Ones: 5 + 8 = 13 → write 3, carry 1
- Tens: 9 + 6 + 1 = 16 → write 6, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1563
---
8. 594 + 978
```
594
+ 978
------
```
- Ones: 4 + 8 = 12 → write 2, carry 1
- Tens: 9 + 7 + 1 = 17 → write 7, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1572
---
9. 593 + 998
```
593
+ 998
------
```
- Ones: 3 + 8 = 11 → write 1, carry 1
- Tens: 9 + 9 + 1 = 19 → write 9, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1591
---
10. 599 + 978
```
599
+ 978
------
```
- Ones: 9 + 8 = 17 → write 7, carry 1
- Tens: 9 + 7 + 1 = 17 → write 7, carry 1
- Hundreds: 5 + 9 + 1 = 15 → write 15
✔ Answer: 1577
---
11. 678 + 543
```
678
+ 543
------
```
- Ones: 8 + 3 = 11 → write 1, carry 1
- Tens: 7 + 4 + 1 = 12 → write 2, carry 1
- Hundreds: 6 + 5 + 1 = 12 → write 12
✔ Answer: 1221
---
12. 876 + 555
```
876
+ 555
------
```
- Ones: 6 + 5 = 11 → write 1, carry 1
- Tens: 7 + 5 + 1 = 13 → write 3, carry 1
- Hundreds: 8 + 5 + 1 = 14 → write 14
✔ Answer: 1431
---
## 📋 Final Answers (in order):
1. 1974
2. 1864
3. 1793
4. 1556
5. 1535
6. 1524
7. 1563
8. 1572
9. 1591
10. 1577
11. 1221
12. 1431
---
## 💡 Tip for Students:
Always remember to carry over when a column adds up to 10 or more! Practice writing the carry number small above the next column to avoid mistakes.
Let me know if you’d like a printable version or want to check your own work against these! 😊
Parent Tip: Review the logic above to help your child master the concept of adding 3 digit numbers with regrouping worksheet.
