Workbook Detail
Addition Addition Three Digit — Set 39
326 + 121 = ___
Show answer
Answer: 447
- Operand1
- 326
- Operand2
- 121
- Operator
- +
705 + 123 = ___
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Answer: 828
- Operand1
- 705
- Operand2
- 123
- Operator
- +
103 + 254 = ___
Show answer
Answer: 357
- Operand1
- 103
- Operand2
- 254
- Operator
- +
492 + 201 = ___
Show answer
Answer: 693
- Operand1
- 492
- Operand2
- 201
- Operator
- +
362 + 115 = ___
Show answer
Answer: 477
- Operand1
- 362
- Operand2
- 115
- Operator
- +
604 + 222 = ___
Show answer
Answer: 826
- Operand1
- 604
- Operand2
- 222
- Operator
- +
465 + 300 = ___
Show answer
Answer: 765
- Operand1
- 465
- Operand2
- 300
- Operator
- +
543 + 413 = ___
Show answer
Answer: 956
- Operand1
- 543
- Operand2
- 413
- Operator
- +
542 + 213 = ___
Show answer
Answer: 755
- Operand1
- 542
- Operand2
- 213
- Operator
- +
508 + 231 = ___
Show answer
Answer: 739
- Operand1
- 508
- Operand2
- 231
- Operator
- +
670 + 210 = ___
Show answer
Answer: 880
- Operand1
- 670
- Operand2
- 210
- Operator
- +
176 + 820 = ___
Show answer
Answer: 996
- Operand1
- 176
- Operand2
- 820
- Operator
- +
501 + 396 = ___
Show answer
Answer: 897
- Operand1
- 501
- Operand2
- 396
- Operator
- +
633 + 136 = ___
Show answer
Answer: 769
- Operand1
- 633
- Operand2
- 136
- Operator
- +
500 + 461 = ___
Show answer
Answer: 961
- Operand1
- 500
- Operand2
- 461
- Operator
- +
521 + 448 = ___
Show answer
Answer: 969
- Operand1
- 521
- Operand2
- 448
- Operator
- +
228 + 600 = ___
Show answer
Answer: 828
- Operand1
- 228
- Operand2
- 600
- Operator
- +
210 + 384 = ___
Show answer
Answer: 594
- Operand1
- 210
- Operand2
- 384
- Operator
- +
176 + 523 = ___
Show answer
Answer: 699
- Operand1
- 176
- Operand2
- 523
- Operator
- +
267 + 321 = ___
Show answer
Answer: 588
- Operand1
- 267
- Operand2
- 321
- 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.