Workbook Detail
Addition Addition Three Digit — Set 68
343 + 625 = ___
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Answer: 968
- Operand1
- 343
- Operand2
- 625
- Operator
- +
680 + 114 = ___
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Answer: 794
- Operand1
- 680
- Operand2
- 114
- Operator
- +
302 + 202 = ___
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Answer: 504
- Operand1
- 302
- Operand2
- 202
- Operator
- +
421 + 106 = ___
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Answer: 527
- Operand1
- 421
- Operand2
- 106
- Operator
- +
280 + 613 = ___
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Answer: 893
- Operand1
- 280
- Operand2
- 613
- Operator
- +
822 + 101 = ___
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Answer: 923
- Operand1
- 822
- Operand2
- 101
- Operator
- +
221 + 318 = ___
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Answer: 539
- Operand1
- 221
- Operand2
- 318
- Operator
- +
645 + 232 = ___
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Answer: 877
- Operand1
- 645
- Operand2
- 232
- Operator
- +
505 + 451 = ___
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Answer: 956
- Operand1
- 505
- Operand2
- 451
- Operator
- +
140 + 708 = ___
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Answer: 848
- Operand1
- 140
- Operand2
- 708
- Operator
- +
520 + 411 = ___
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Answer: 931
- Operand1
- 520
- Operand2
- 411
- Operator
- +
155 + 523 = ___
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Answer: 678
- Operand1
- 155
- Operand2
- 523
- Operator
- +
121 + 437 = ___
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Answer: 558
- Operand1
- 121
- Operand2
- 437
- Operator
- +
526 + 431 = ___
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Answer: 957
- Operand1
- 526
- Operand2
- 431
- Operator
- +
111 + 873 = ___
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Answer: 984
- Operand1
- 111
- Operand2
- 873
- Operator
- +
560 + 402 = ___
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Answer: 962
- Operand1
- 560
- Operand2
- 402
- Operator
- +
571 + 225 = ___
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Answer: 796
- Operand1
- 571
- Operand2
- 225
- Operator
- +
251 + 100 = ___
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Answer: 351
- Operand1
- 251
- Operand2
- 100
- Operator
- +
631 + 145 = ___
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Answer: 776
- Operand1
- 631
- Operand2
- 145
- Operator
- +
154 + 201 = ___
Show answer
Answer: 355
- Operand1
- 154
- Operand2
- 201
- 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.