Workbook Detail
Addition Addition Three Digit — Set 20
345 + 611 = ___
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Answer: 956
- Operand1
- 345
- Operand2
- 611
- Operator
- +
616 + 280 = ___
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Answer: 896
- Operand1
- 616
- Operand2
- 280
- Operator
- +
446 + 303 = ___
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Answer: 749
- Operand1
- 446
- Operand2
- 303
- Operator
- +
200 + 736 = ___
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Answer: 936
- Operand1
- 200
- Operand2
- 736
- Operator
- +
306 + 631 = ___
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Answer: 937
- Operand1
- 306
- Operand2
- 631
- Operator
- +
100 + 730 = ___
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Answer: 830
- Operand1
- 100
- Operand2
- 730
- Operator
- +
108 + 141 = ___
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Answer: 249
- Operand1
- 108
- Operand2
- 141
- Operator
- +
430 + 116 = ___
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Answer: 546
- Operand1
- 430
- Operand2
- 116
- Operator
- +
430 + 127 = ___
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Answer: 557
- Operand1
- 430
- Operand2
- 127
- Operator
- +
224 + 214 = ___
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Answer: 438
- Operand1
- 224
- Operand2
- 214
- Operator
- +
162 + 807 = ___
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Answer: 969
- Operand1
- 162
- Operand2
- 807
- Operator
- +
200 + 314 = ___
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Answer: 514
- Operand1
- 200
- Operand2
- 314
- Operator
- +
166 + 202 = ___
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Answer: 368
- Operand1
- 166
- Operand2
- 202
- Operator
- +
101 + 753 = ___
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Answer: 854
- Operand1
- 101
- Operand2
- 753
- Operator
- +
210 + 367 = ___
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Answer: 577
- Operand1
- 210
- Operand2
- 367
- Operator
- +
153 + 324 = ___
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Answer: 477
- Operand1
- 153
- Operand2
- 324
- Operator
- +
314 + 125 = ___
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Answer: 439
- Operand1
- 314
- Operand2
- 125
- Operator
- +
460 + 326 = ___
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Answer: 786
- Operand1
- 460
- Operand2
- 326
- Operator
- +
373 + 112 = ___
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Answer: 485
- Operand1
- 373
- Operand2
- 112
- Operator
- +
235 + 603 = ___
Show answer
Answer: 838
- Operand1
- 235
- Operand2
- 603
- 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.