2nd Grade Math Worksheets - Free Printable Worksheets for Second Grade - Free Printable

Let’s solve each addition problem step by step.

We’ll add the numbers column by column, starting from the right (ones place), then tens, then hundreds. If any column adds to 10 or more, we carry over the extra digit to the next column on the left.

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Problem 1: 212 + 717

- Ones: 2 + 7 = 9
- Tens: 1 + 1 = 2
- Hundreds: 2 + 7 = 9
→ 929

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Problem 2: 603 + 323

- Ones: 3 + 3 = 6
- Tens: 0 + 2 = 2
- Hundreds: 6 + 3 = 9
→ 926

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Problem 3: 424 + 134

- Ones: 4 + 4 = 8
- Tens: 2 + 3 = 5
- Hundreds: 4 + 1 = 5
→ 558

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Problem 4: 643 + 141

- Ones: 3 + 1 = 4
- Tens: 4 + 4 = 8
- Hundreds: 6 + 1 = 7
→ 784

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Problem 5: 590 + 63

- Ones: 0 + 3 = 3
- Tens: 9 + 6 = 15 → write 5, carry 1
- Hundreds: 5 + 0 + 1 (carry) = 6
→ 653

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Problem 6: 90 + 551

- Ones: 0 + 1 = 1
- Tens: 9 + 5 = 14 → write 4, carry 1
- Hundreds: 0 + 5 + 1 (carry) = 6
→ 641

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Problem 7: 44 + 225

- Ones: 4 + 5 = 9
- Tens: 4 + 2 = 6
- Hundreds: 0 + 2 = 2
→ 269

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Problem 8: 534 + 459

- Ones: 4 + 9 = 13 → write 3, carry 1
- Tens: 3 + 5 = 8 + 1 (carry) = 9
- Hundreds: 5 + 4 = 9
→ 993

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Problem 9: 121 + 766

- Ones: 1 + 6 = 7
- Tens: 2 + 6 = 8
- Hundreds: 1 + 7 = 8
→ 887

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Problem 10: 262 + 665

- Ones: 2 + 5 = 7
- Tens: 6 + 6 = 12 → write 2, carry 1
- Hundreds: 2 + 6 = 8 + 1 (carry) = 9
→ 927

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Problem 11: 560 + 27

- Ones: 0 + 7 = 7
- Tens: 6 + 2 = 8
- Hundreds: 5 + 0 = 5
→ 587

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Problem 12: 580 + 142

- Ones: 0 + 2 = 2
- Tens: 8 + 4 = 12 → write 2, carry 1
- Hundreds: 5 + 1 = 6 + 1 (carry) = 7
→ 722

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Problem 13: 124 + 607

- Ones: 4 + 7 = 11 → write 1, carry 1
- Tens: 2 + 0 = 2 + 1 (carry) = 3
- Hundreds: 1 + 6 = 7
→ 731

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Problem 14: 322 + 186

- Ones: 2 + 6 = 8
- Tens: 2 + 8 = 10 → write 0, carry 1
- Hundreds: 3 + 1 = 4 + 1 (carry) = 5
→ 508

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Problem 15: 784 + 47

- Ones: 4 + 7 = 11 → write 1, carry 1
- Tens: 8 + 4 = 12 + 1 (carry) = 13 → write 3, carry 1
- Hundreds: 7 + 0 = 7 + 1 (carry) = 8
→ 831

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Final Answer:
929, 926, 558, 784, 653, 641, 269, 993, 887, 927, 587, 722, 731, 508, 831