3 Digit Addition with Regrouping Worksheet
Worksheet with 12 three-digit addition problems requiring regrouping, titled "3 Digit Addition with Regrouping," including spaces for name, score, and time.
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Step-by-step solution for: 3 Digit Addition With Regrouping Worksheets
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Show Answer Key & Explanations
Step-by-step solution for: 3 Digit Addition With Regrouping Worksheets
Let’s solve each of the 12 addition problems step by step. Since this is “3-digit addition with regrouping,” we’ll add column by column from right to left (ones, tens, hundreds), and carry over any extra value when a column sums to 10 or more.
---
**Problem 1:
186
+ 948
------**
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 8 + 4 = 12, plus carried 1 = 13 → write 3, carry 1
- Hundreds: 1 + 9 = 10, plus carried 1 = 11 → write 11
→ Answer: 1134
---
**Problem 2:
944
+ 199
------**
- Ones: 4 + 9 = 13 → write 3, carry 1
- Tens: 4 + 9 = 13, plus carried 1 = 14 → write 4, carry 1
- Hundreds: 9 + 1 = 10, plus carried 1 = 11 → write 11
→ Answer: 1143
---
**Problem 3:
766
+ 889
------**
- Ones: 6 + 9 = 15 → write 5, carry 1
- Tens: 6 + 8 = 14, plus carried 1 = 15 → write 5, carry 1
- Hundreds: 7 + 8 = 15, plus carried 1 = 16 → write 16
→ Answer: 1655
---
**Problem 4:
941
+ 399
------**
- Ones: 1 + 9 = 10 → write 0, carry 1
- Tens: 4 + 9 = 13, plus carried 1 = 14 → write 4, carry 1
- Hundreds: 9 + 3 = 12, plus carried 1 = 13 → write 13
→ Answer: 1340
---
**Problem 5:
789
+ 535
------**
- Ones: 9 + 5 = 14 → write 4, carry 1
- Tens: 8 + 3 = 11, plus carried 1 = 12 → write 2, carry 1
- Hundreds: 7 + 5 = 12, plus carried 1 = 13 → write 13
→ Answer: 1324
---
**Problem 6:
393
+ 817
------**
- Ones: 3 + 7 = 10 → write 0, carry 1
- Tens: 9 + 1 = 10, plus carried 1 = 11 → write 1, carry 1
- Hundreds: 3 + 8 = 11, plus carried 1 = 12 → write 12
→ Answer: 1210
---
**Problem 7:
278
+ 865
------**
- Ones: 8 + 5 = 13 → write 3, carry 1
- Tens: 7 + 6 = 13, plus carried 1 = 14 → write 4, carry 1
- Hundreds: 2 + 8 = 10, plus carried 1 = 11 → write 11
→ Answer: 1143
---
**Problem 8:
891
+ 819
------**
- Ones: 1 + 9 = 10 → write 0, carry 1
- Tens: 9 + 1 = 10, plus carried 1 = 11 → write 1, carry 1
- Hundreds: 8 + 8 = 16, plus carried 1 = 17 → write 17
→ Answer: 1710
---
**Problem 9:
392
+ 899
------**
- Ones: 2 + 9 = 11 → write 1, carry 1
- Tens: 9 + 9 = 18, plus carried 1 = 19 → write 9, carry 1
- Hundreds: 3 + 8 = 11, plus carried 1 = 12 → write 12
→ Answer: 1291
---
**Problem 10:
863
+ 457
------**
- Ones: 3 + 7 = 10 → write 0, carry 1
- Tens: 6 + 5 = 11, plus carried 1 = 12 → write 2, carry 1
- Hundreds: 8 + 4 = 12, plus carried 1 = 13 → write 13
→ Answer: 1320
---
**Problem 11:
373
+ 748
------**
- Ones: 3 + 8 = 11 → write 1, carry 1
- Tens: 7 + 4 = 11, plus carried 1 = 12 → write 2, carry 1
- Hundreds: 3 + 7 = 10, plus carried 1 = 11 → write 11
→ Answer: 1121
---
**Problem 12:
356
+ 967
------**
- Ones: 6 + 7 = 13 → write 3, carry 1
- Tens: 5 + 6 = 11, plus carried 1 = 12 → write 2, carry 1
- Hundreds: 3 + 9 = 12, plus carried 1 = 13 → write 13
→ Answer: 1323
---
Final Answer:
1. 1134
2. 1143
3. 1655
4. 1340
5. 1324
6. 1210
7. 1143
8. 1710
9. 1291
10. 1320
11. 1121
12. 1323
---
**Problem 1:
186
+ 948
------**
- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 8 + 4 = 12, plus carried 1 = 13 → write 3, carry 1
- Hundreds: 1 + 9 = 10, plus carried 1 = 11 → write 11
→ Answer: 1134
---
**Problem 2:
944
+ 199
------**
- Ones: 4 + 9 = 13 → write 3, carry 1
- Tens: 4 + 9 = 13, plus carried 1 = 14 → write 4, carry 1
- Hundreds: 9 + 1 = 10, plus carried 1 = 11 → write 11
→ Answer: 1143
---
**Problem 3:
766
+ 889
------**
- Ones: 6 + 9 = 15 → write 5, carry 1
- Tens: 6 + 8 = 14, plus carried 1 = 15 → write 5, carry 1
- Hundreds: 7 + 8 = 15, plus carried 1 = 16 → write 16
→ Answer: 1655
---
**Problem 4:
941
+ 399
------**
- Ones: 1 + 9 = 10 → write 0, carry 1
- Tens: 4 + 9 = 13, plus carried 1 = 14 → write 4, carry 1
- Hundreds: 9 + 3 = 12, plus carried 1 = 13 → write 13
→ Answer: 1340
---
**Problem 5:
789
+ 535
------**
- Ones: 9 + 5 = 14 → write 4, carry 1
- Tens: 8 + 3 = 11, plus carried 1 = 12 → write 2, carry 1
- Hundreds: 7 + 5 = 12, plus carried 1 = 13 → write 13
→ Answer: 1324
---
**Problem 6:
393
+ 817
------**
- Ones: 3 + 7 = 10 → write 0, carry 1
- Tens: 9 + 1 = 10, plus carried 1 = 11 → write 1, carry 1
- Hundreds: 3 + 8 = 11, plus carried 1 = 12 → write 12
→ Answer: 1210
---
**Problem 7:
278
+ 865
------**
- Ones: 8 + 5 = 13 → write 3, carry 1
- Tens: 7 + 6 = 13, plus carried 1 = 14 → write 4, carry 1
- Hundreds: 2 + 8 = 10, plus carried 1 = 11 → write 11
→ Answer: 1143
---
**Problem 8:
891
+ 819
------**
- Ones: 1 + 9 = 10 → write 0, carry 1
- Tens: 9 + 1 = 10, plus carried 1 = 11 → write 1, carry 1
- Hundreds: 8 + 8 = 16, plus carried 1 = 17 → write 17
→ Answer: 1710
---
**Problem 9:
392
+ 899
------**
- Ones: 2 + 9 = 11 → write 1, carry 1
- Tens: 9 + 9 = 18, plus carried 1 = 19 → write 9, carry 1
- Hundreds: 3 + 8 = 11, plus carried 1 = 12 → write 12
→ Answer: 1291
---
**Problem 10:
863
+ 457
------**
- Ones: 3 + 7 = 10 → write 0, carry 1
- Tens: 6 + 5 = 11, plus carried 1 = 12 → write 2, carry 1
- Hundreds: 8 + 4 = 12, plus carried 1 = 13 → write 13
→ Answer: 1320
---
**Problem 11:
373
+ 748
------**
- Ones: 3 + 8 = 11 → write 1, carry 1
- Tens: 7 + 4 = 11, plus carried 1 = 12 → write 2, carry 1
- Hundreds: 3 + 7 = 10, plus carried 1 = 11 → write 11
→ Answer: 1121
---
**Problem 12:
356
+ 967
------**
- Ones: 6 + 7 = 13 → write 3, carry 1
- Tens: 5 + 6 = 11, plus carried 1 = 12 → write 2, carry 1
- Hundreds: 3 + 9 = 12, plus carried 1 = 13 → write 13
→ Answer: 1323
---
Final Answer:
1. 1134
2. 1143
3. 1655
4. 1340
5. 1324
6. 1210
7. 1143
8. 1710
9. 1291
10. 1320
11. 1121
12. 1323
Parent Tip: Review the logic above to help your child master the concept of 3 digit addition without regrouping worksheet.
