Free Addition Worksheet - Regrouping - Free Worksheets ... - Free Printable

Let’s solve each addition problem step by step. Remember, we’re adding two numbers and sometimes we need to regroup (carry over) when a column adds up to 10 or more.

We’ll go row by row, left to right.

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First Row:

1. 453 + 164

- Ones: 3 + 4 = 7
- Tens: 5 + 6 = 11 → write down 1, carry over 1
- Hundreds: 4 + 1 + 1 (carry) = 6
→ 617

2. 527 + 185

- Ones: 7 + 5 = 12 → write 2, carry 1
- Tens: 2 + 8 + 1 = 11 → write 1, carry 1
- Hundreds: 5 + 1 + 1 = 7
→ 712

3. 358 + 236

- Ones: 8 + 6 = 14 → write 4, carry 1
- Tens: 5 + 3 + 1 = 9
- Hundreds: 3 + 2 = 5
→ 594

4. 264 + 174

- Ones: 4 + 4 = 8
- Tens: 6 + 7 = 13 → write 3, carry 1
- Hundreds: 2 + 1 + 1 = 4
→ 438

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Second Row:

5. 589 + 305

- Ones: 9 + 5 = 14 → write 4, carry 1
- Tens: 8 + 0 + 1 = 9
- Hundreds: 5 + 3 = 8
→ 894

6. 753 + 248

- Ones: 3 + 8 = 11 → write 1, carry 1
- Tens: 5 + 4 + 1 = 10 → write 0, carry 1
- Hundreds: 7 + 2 + 1 = 10 → write 0, carry 1 → then add the carried 1 as thousands
→ 1001

7. 247 + 265

- Ones: 7 + 5 = 12 → write 2, carry 1
- Tens: 4 + 6 + 1 = 11 → write 1, carry 1
- Hundreds: 2 + 2 + 1 = 5
→ 512

8. 422 + 396

- Ones: 2 + 6 = 8
- Tens: 2 + 9 = 11 → write 1, carry 1
- Hundreds: 4 + 3 + 1 = 8
→ 818

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Third Row:

9. 356 + 278

- Ones: 6 + 8 = 14 → write 4, carry 1
- Tens: 5 + 7 + 1 = 13 → write 3, carry 1
- Hundreds: 3 + 2 + 1 = 6
→ 634

10. 169 + 164

- Ones: 9 + 4 = 13 → write 3, carry 1
- Tens: 6 + 6 + 1 = 13 → write 3, carry 1
- Hundreds: 1 + 1 + 1 = 3
→ 333

11. 680 + 289

- Ones: 0 + 9 = 9
- Tens: 8 + 8 = 16 → write 6, carry 1
- Hundreds: 6 + 2 + 1 = 9
→ 969

12. 413 + 469

- Ones: 3 + 9 = 12 → write 2, carry 1
- Tens: 1 + 6 + 1 = 8
- Hundreds: 4 + 4 = 8
→ 882

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Fourth Row:

13. 602 + 598

- Ones: 2 + 8 = 10 → write 0, carry 1
- Tens: 0 + 9 + 1 = 10 → write 0, carry 1
- Hundreds: 6 + 5 + 1 = 12 → write 2, carry 1 → then add carried 1 as thousands
→ 1200

14. 723 + 786

- Ones: 3 + 6 = 9
- Tens: 2 + 8 = 10 → write 0, carry 1
- Hundreds: 7 + 7 + 1 = 15 → write 5, carry 1 → then add carried 1 as thousands
→ 1509

15. 558 + 565

- Ones: 8 + 5 = 13 → write 3, carry 1
- Tens: 5 + 6 + 1 = 12 → write 2, carry 1
- Hundreds: 5 + 5 + 1 = 11 → write 1, carry 1 → then add carried 1 as thousands
→ 1123

16. 864 + 297

- Ones: 4 + 7 = 11 → write 1, carry 1
- Tens: 6 + 9 + 1 = 16 → write 6, carry 1
- Hundreds: 8 + 2 + 1 = 11 → write 1, carry 1 → then add carried 1 as thousands
→ 1161

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Final Answer:

617, 712, 594, 438,
894, 1001, 512, 818,
634, 333, 969, 882,
1200, 1509, 1123, 1161