Workbook Detail
Addition Addition Three Digit — Set 78
422 + 304 = ___
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Answer: 726
- Operand1
- 422
- Operand2
- 304
- Operator
- +
232 + 162 = ___
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Answer: 394
- Operand1
- 232
- Operand2
- 162
- Operator
- +
595 + 400 = ___
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Answer: 995
- Operand1
- 595
- Operand2
- 400
- Operator
- +
120 + 665 = ___
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Answer: 785
- Operand1
- 120
- Operand2
- 665
- Operator
- +
300 + 489 = ___
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Answer: 789
- Operand1
- 300
- Operand2
- 489
- Operator
- +
601 + 383 = ___
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Answer: 984
- Operand1
- 601
- Operand2
- 383
- Operator
- +
607 + 360 = ___
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Answer: 967
- Operand1
- 607
- Operand2
- 360
- Operator
- +
104 + 312 = ___
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Answer: 416
- Operand1
- 104
- Operand2
- 312
- Operator
- +
347 + 411 = ___
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Answer: 758
- Operand1
- 347
- Operand2
- 411
- Operator
- +
230 + 511 = ___
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Answer: 741
- Operand1
- 230
- Operand2
- 511
- Operator
- +
200 + 106 = ___
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Answer: 306
- Operand1
- 200
- Operand2
- 106
- Operator
- +
170 + 222 = ___
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Answer: 392
- Operand1
- 170
- Operand2
- 222
- Operator
- +
164 + 422 = ___
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Answer: 586
- Operand1
- 164
- Operand2
- 422
- Operator
- +
223 + 256 = ___
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Answer: 479
- Operand1
- 223
- Operand2
- 256
- Operator
- +
446 + 552 = ___
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Answer: 998
- Operand1
- 446
- Operand2
- 552
- Operator
- +
692 + 306 = ___
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Answer: 998
- Operand1
- 692
- Operand2
- 306
- Operator
- +
664 + 322 = ___
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Answer: 986
- Operand1
- 664
- Operand2
- 322
- Operator
- +
754 + 200 = ___
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Answer: 954
- Operand1
- 754
- Operand2
- 200
- Operator
- +
467 + 101 = ___
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Answer: 568
- Operand1
- 467
- Operand2
- 101
- Operator
- +
150 + 126 = ___
Show answer
Answer: 276
- Operand1
- 150
- Operand2
- 126
- 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.