Let’s solve each addition problem step by step. We’ll add the numbers column by column, starting from the right (ones place), and regroup when needed.
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Problem 1: 4164 + 7939
Start from the right:
- Ones: 4 + 9 = 13 → write down 3, carry over 1
- Tens: 6 + 3 + 1 (carry) = 10 → write down 0, carry over 1
- Hundreds: 1 + 9 + 1 (carry) = 11 → write down 1, carry over 1
- Thousands: 4 + 7 + 1 (carry) = 12 → write down 12
Answer:
12103
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Problem 2: 3994 + 1568
- Ones: 4 + 8 = 12 → write 2, carry 1
- Tens: 9 + 6 + 1 = 16 → write 6, carry 1
- Hundreds: 9 + 5 + 1 = 15 → write 5, carry 1
- Thousands: 3 + 1 + 1 = 5
Answer:
5562
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Problem 3: 3252 + 9929
- Ones: 2 + 9 = 11 → write 1, carry 1
- Tens: 5 + 2 + 1 = 8 → write 8
- Hundreds: 2 + 9 = 11 → write 1, carry 1
- Thousands: 3 + 9 + 1 = 13 → write 13
Answer:
13181
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Problem 4: 8536 + 6523
- Ones: 6 + 3 = 9
- Tens: 3 + 2 = 5
- Hundreds: 5 + 5 = 10 → write 0, carry 1
- Thousands: 8 + 6 + 1 = 15 → write 15
Answer:
15059
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Problem 5: 4094 + 7678
- Ones: 4 + 8 = 12 → write 2, carry 1
- Tens: 9 + 7 + 1 = 17 → write 7, carry 1
- Hundreds: 0 + 6 + 1 = 7
- Thousands: 4 + 7 = 11 → write 11
Answer:
11772
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Problem 6: 8565 + 5893
- Ones: 5 + 3 = 8
- Tens: 6 + 9 = 15 → write 5, carry 1
- Hundreds: 5 + 8 + 1 = 14 → write 4, carry 1
- Thousands: 8 + 5 + 1 = 14 → write 14
Answer:
14458
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Problem 7: 7858 + 6983
- Ones: 8 + 3 = 11 → write 1, carry 1
- Tens: 5 + 8 + 1 = 14 → write 4, carry 1
- Hundreds: 8 + 9 + 1 = 18 → write 8, carry 1
- Thousands: 7 + 6 + 1 = 14 → write 14
Answer:
14841
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Problem 8: 6127 + 2176
- Ones: 7 + 6 = 13 → write 3, carry 1
- Tens: 2 + 7 + 1 = 10 → write 0, carry 1
- Hundreds: 1 + 1 + 1 = 3
- Thousands: 6 + 2 = 8
Answer:
8303
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Problem 9: 6646 + 7384
- Ones: 6 + 4 = 10 → write 0, carry 1
- Tens: 4 + 8 + 1 = 13 → write 3, carry 1
- Hundreds: 6 + 3 + 1 = 10 → write 0, carry 1
- Thousands: 6 + 7 + 1 = 14 → write 14
Answer:
14030
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Final Answer:
Here are all the answers in order (left to right, top to bottom):
1. 12103
2. 5562
3. 13181
4. 15059
5. 11772
6. 14458
7. 14841
8. 8303
9. 14030
Parent Tip: Review the logic above to help your child master the concept of 4 digits addition worksheet.
