Workbook Detail
Addition Addition Three Digit — Set 53
423 + 100 = ___
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Answer: 523
- Operand1
- 423
- Operand2
- 100
- Operator
- +
430 + 365 = ___
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Answer: 795
- Operand1
- 430
- Operand2
- 365
- Operator
- +
772 + 207 = ___
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Answer: 979
- Operand1
- 772
- Operand2
- 207
- Operator
- +
344 + 215 = ___
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Answer: 559
- Operand1
- 344
- Operand2
- 215
- Operator
- +
203 + 746 = ___
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Answer: 949
- Operand1
- 203
- Operand2
- 746
- Operator
- +
201 + 736 = ___
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Answer: 937
- Operand1
- 201
- Operand2
- 736
- Operator
- +
206 + 231 = ___
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Answer: 437
- Operand1
- 206
- Operand2
- 231
- Operator
- +
312 + 611 = ___
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Answer: 923
- Operand1
- 312
- Operand2
- 611
- Operator
- +
845 + 154 = ___
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Answer: 999
- Operand1
- 845
- Operand2
- 154
- Operator
- +
502 + 214 = ___
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Answer: 716
- Operand1
- 502
- Operand2
- 214
- Operator
- +
501 + 431 = ___
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Answer: 932
- Operand1
- 501
- Operand2
- 431
- Operator
- +
303 + 175 = ___
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Answer: 478
- Operand1
- 303
- Operand2
- 175
- Operator
- +
254 + 324 = ___
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Answer: 578
- Operand1
- 254
- Operand2
- 324
- Operator
- +
432 + 561 = ___
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Answer: 993
- Operand1
- 432
- Operand2
- 561
- Operator
- +
312 + 564 = ___
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Answer: 876
- Operand1
- 312
- Operand2
- 564
- Operator
- +
524 + 233 = ___
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Answer: 757
- Operand1
- 524
- Operand2
- 233
- Operator
- +
214 + 404 = ___
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Answer: 618
- Operand1
- 214
- Operand2
- 404
- Operator
- +
426 + 340 = ___
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Answer: 766
- Operand1
- 426
- Operand2
- 340
- Operator
- +
770 + 126 = ___
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Answer: 896
- Operand1
- 770
- Operand2
- 126
- Operator
- +
400 + 201 = ___
Show answer
Answer: 601
- Operand1
- 400
- Operand2
- 201
- Operator
- +
Teaching Notes
Download this free addition three digit math worksheet. Uniquely generated with an answer key — great for homework, practice, or assessment.
Features
- Printable PDF format
- Answer key included
- Multiple difficulty levels
- Classroom and home friendly
How to Use These Worksheets
- Select a three digit set.
- Print or use on-screen.
- Check answers and practice again.
Tips
- Start with easier sets and move up gradually.
- Practice in short sessions (10–15 minutes).
- Review mistakes and redo similar problems.
Frequently Asked Questions
How do I use this Addition Three Digit Math Worksheet worksheet?
Print the worksheet and complete the problems. Each set number generates a unique arrangement. Use the same set number for all students in a class for consistent assessment.
Is there an answer key?
Yes — every worksheet includes a complete answer key. Print it separately or view it on screen.