Workbook Detail
Addition Addition Three Digit — Set 80
144 + 234 = ___
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Answer: 378
- Operand1
- 144
- Operand2
- 234
- Operator
- +
640 + 153 = ___
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Answer: 793
- Operand1
- 640
- Operand2
- 153
- Operator
- +
100 + 274 = ___
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Answer: 374
- Operand1
- 100
- Operand2
- 274
- Operator
- +
113 + 345 = ___
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Answer: 458
- Operand1
- 113
- Operand2
- 345
- Operator
- +
211 + 130 = ___
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Answer: 341
- Operand1
- 211
- Operand2
- 130
- Operator
- +
502 + 493 = ___
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Answer: 995
- Operand1
- 502
- Operand2
- 493
- Operator
- +
426 + 112 = ___
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Answer: 538
- Operand1
- 426
- Operand2
- 112
- Operator
- +
338 + 641 = ___
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Answer: 979
- Operand1
- 338
- Operand2
- 641
- Operator
- +
523 + 346 = ___
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Answer: 869
- Operand1
- 523
- Operand2
- 346
- Operator
- +
412 + 424 = ___
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Answer: 836
- Operand1
- 412
- Operand2
- 424
- Operator
- +
236 + 302 = ___
Show answer
Answer: 538
- Operand1
- 236
- Operand2
- 302
- Operator
- +
735 + 124 = ___
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Answer: 859
- Operand1
- 735
- Operand2
- 124
- Operator
- +
183 + 104 = ___
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Answer: 287
- Operand1
- 183
- Operand2
- 104
- Operator
- +
345 + 230 = ___
Show answer
Answer: 575
- Operand1
- 345
- Operand2
- 230
- Operator
- +
611 + 303 = ___
Show answer
Answer: 914
- Operand1
- 611
- Operand2
- 303
- Operator
- +
363 + 400 = ___
Show answer
Answer: 763
- Operand1
- 363
- Operand2
- 400
- Operator
- +
383 + 602 = ___
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Answer: 985
- Operand1
- 383
- Operand2
- 602
- Operator
- +
441 + 432 = ___
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Answer: 873
- Operand1
- 441
- Operand2
- 432
- Operator
- +
257 + 620 = ___
Show answer
Answer: 877
- Operand1
- 257
- Operand2
- 620
- Operator
- +
410 + 543 = ___
Show answer
Answer: 953
- Operand1
- 410
- Operand2
- 543
- 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.