Workbook Detail
Addition Addition Three Digit — Set 69
720 + 220 = ___
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Answer: 940
- Operand1
- 720
- Operand2
- 220
- Operator
- +
291 + 303 = ___
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Answer: 594
- Operand1
- 291
- Operand2
- 303
- Operator
- +
135 + 233 = ___
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Answer: 368
- Operand1
- 135
- Operand2
- 233
- Operator
- +
777 + 202 = ___
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Answer: 979
- Operand1
- 777
- Operand2
- 202
- Operator
- +
194 + 102 = ___
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Answer: 296
- Operand1
- 194
- Operand2
- 102
- Operator
- +
448 + 311 = ___
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Answer: 759
- Operand1
- 448
- Operand2
- 311
- Operator
- +
144 + 605 = ___
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Answer: 749
- Operand1
- 144
- Operand2
- 605
- Operator
- +
623 + 123 = ___
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Answer: 746
- Operand1
- 623
- Operand2
- 123
- Operator
- +
362 + 611 = ___
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Answer: 973
- Operand1
- 362
- Operand2
- 611
- Operator
- +
516 + 243 = ___
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Answer: 759
- Operand1
- 516
- Operand2
- 243
- Operator
- +
134 + 420 = ___
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Answer: 554
- Operand1
- 134
- Operand2
- 420
- Operator
- +
112 + 221 = ___
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Answer: 333
- Operand1
- 112
- Operand2
- 221
- Operator
- +
564 + 222 = ___
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Answer: 786
- Operand1
- 564
- Operand2
- 222
- Operator
- +
660 + 207 = ___
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Answer: 867
- Operand1
- 660
- Operand2
- 207
- Operator
- +
510 + 384 = ___
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Answer: 894
- Operand1
- 510
- Operand2
- 384
- Operator
- +
331 + 443 = ___
Show answer
Answer: 774
- Operand1
- 331
- Operand2
- 443
- Operator
- +
131 + 543 = ___
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Answer: 674
- Operand1
- 131
- Operand2
- 543
- Operator
- +
416 + 132 = ___
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Answer: 548
- Operand1
- 416
- Operand2
- 132
- Operator
- +
255 + 243 = ___
Show answer
Answer: 498
- Operand1
- 255
- Operand2
- 243
- Operator
- +
203 + 144 = ___
Show answer
Answer: 347
- Operand1
- 203
- Operand2
- 144
- 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.