Workbook Detail
Addition Addition Three Digit — Set 58
402 + 507 = ___
Show answer
Answer: 909
- Operand1
- 402
- Operand2
- 507
- Operator
- +
522 + 321 = ___
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Answer: 843
- Operand1
- 522
- Operand2
- 321
- Operator
- +
300 + 360 = ___
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Answer: 660
- Operand1
- 300
- Operand2
- 360
- Operator
- +
504 + 460 = ___
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Answer: 964
- Operand1
- 504
- Operand2
- 460
- Operator
- +
531 + 332 = ___
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Answer: 863
- Operand1
- 531
- Operand2
- 332
- Operator
- +
506 + 261 = ___
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Answer: 767
- Operand1
- 506
- Operand2
- 261
- Operator
- +
252 + 637 = ___
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Answer: 889
- Operand1
- 252
- Operand2
- 637
- Operator
- +
300 + 293 = ___
Show answer
Answer: 593
- Operand1
- 300
- Operand2
- 293
- Operator
- +
335 + 631 = ___
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Answer: 966
- Operand1
- 335
- Operand2
- 631
- Operator
- +
540 + 344 = ___
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Answer: 884
- Operand1
- 540
- Operand2
- 344
- Operator
- +
322 + 116 = ___
Show answer
Answer: 438
- Operand1
- 322
- Operand2
- 116
- Operator
- +
156 + 421 = ___
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Answer: 577
- Operand1
- 156
- Operand2
- 421
- Operator
- +
266 + 201 = ___
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Answer: 467
- Operand1
- 266
- Operand2
- 201
- Operator
- +
323 + 253 = ___
Show answer
Answer: 576
- Operand1
- 323
- Operand2
- 253
- Operator
- +
141 + 844 = ___
Show answer
Answer: 985
- Operand1
- 141
- Operand2
- 844
- Operator
- +
435 + 461 = ___
Show answer
Answer: 896
- Operand1
- 435
- Operand2
- 461
- Operator
- +
213 + 735 = ___
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Answer: 948
- Operand1
- 213
- Operand2
- 735
- Operator
- +
604 + 230 = ___
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Answer: 834
- Operand1
- 604
- Operand2
- 230
- Operator
- +
203 + 556 = ___
Show answer
Answer: 759
- Operand1
- 203
- Operand2
- 556
- Operator
- +
143 + 221 = ___
Show answer
Answer: 364
- Operand1
- 143
- Operand2
- 221
- 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.