Workbook Detail
Addition Addition Three Digit — Set 12
411 + 216 = ___
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Answer: 627
- Operand1
- 411
- Operand2
- 216
- Operator
- +
207 + 440 = ___
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Answer: 647
- Operand1
- 207
- Operand2
- 440
- Operator
- +
113 + 653 = ___
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Answer: 766
- Operand1
- 113
- Operand2
- 653
- Operator
- +
815 + 122 = ___
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Answer: 937
- Operand1
- 815
- Operand2
- 122
- Operator
- +
478 + 310 = ___
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Answer: 788
- Operand1
- 478
- Operand2
- 310
- Operator
- +
104 + 495 = ___
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Answer: 599
- Operand1
- 104
- Operand2
- 495
- Operator
- +
632 + 206 = ___
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Answer: 838
- Operand1
- 632
- Operand2
- 206
- Operator
- +
820 + 110 = ___
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Answer: 930
- Operand1
- 820
- Operand2
- 110
- Operator
- +
357 + 122 = ___
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Answer: 479
- Operand1
- 357
- Operand2
- 122
- Operator
- +
346 + 213 = ___
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Answer: 559
- Operand1
- 346
- Operand2
- 213
- Operator
- +
240 + 552 = ___
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Answer: 792
- Operand1
- 240
- Operand2
- 552
- Operator
- +
344 + 334 = ___
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Answer: 678
- Operand1
- 344
- Operand2
- 334
- Operator
- +
103 + 193 = ___
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Answer: 296
- Operand1
- 103
- Operand2
- 193
- Operator
- +
130 + 203 = ___
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Answer: 333
- Operand1
- 130
- Operand2
- 203
- Operator
- +
413 + 421 = ___
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Answer: 834
- Operand1
- 413
- Operand2
- 421
- Operator
- +
536 + 100 = ___
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Answer: 636
- Operand1
- 536
- Operand2
- 100
- Operator
- +
230 + 240 = ___
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Answer: 470
- Operand1
- 230
- Operand2
- 240
- Operator
- +
254 + 103 = ___
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Answer: 357
- Operand1
- 254
- Operand2
- 103
- Operator
- +
402 + 195 = ___
Show answer
Answer: 597
- Operand1
- 402
- Operand2
- 195
- 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.