Workbook Detail
Addition Addition Three Digit — Set 66
117 + 780 = ___
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Answer: 897
- Operand1
- 117
- Operand2
- 780
- Operator
- +
245 + 140 = ___
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Answer: 385
- Operand1
- 245
- Operand2
- 140
- Operator
- +
453 + 314 = ___
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Answer: 767
- Operand1
- 453
- Operand2
- 314
- Operator
- +
114 + 543 = ___
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Answer: 657
- Operand1
- 114
- Operand2
- 543
- Operator
- +
600 + 242 = ___
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Answer: 842
- Operand1
- 600
- Operand2
- 242
- Operator
- +
410 + 582 = ___
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Answer: 992
- Operand1
- 410
- Operand2
- 582
- Operator
- +
141 + 710 = ___
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Answer: 851
- Operand1
- 141
- Operand2
- 710
- Operator
- +
243 + 151 = ___
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Answer: 394
- Operand1
- 243
- Operand2
- 151
- Operator
- +
302 + 127 = ___
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Answer: 429
- Operand1
- 302
- Operand2
- 127
- Operator
- +
513 + 456 = ___
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Answer: 969
- Operand1
- 513
- Operand2
- 456
- Operator
- +
814 + 141 = ___
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Answer: 955
- Operand1
- 814
- Operand2
- 141
- Operator
- +
180 + 502 = ___
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Answer: 682
- Operand1
- 180
- Operand2
- 502
- Operator
- +
754 + 142 = ___
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Answer: 896
- Operand1
- 754
- Operand2
- 142
- Operator
- +
535 + 142 = ___
Show answer
Answer: 677
- Operand1
- 535
- Operand2
- 142
- Operator
- +
135 + 740 = ___
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Answer: 875
- Operand1
- 135
- Operand2
- 740
- Operator
- +
663 + 230 = ___
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Answer: 893
- Operand1
- 663
- Operand2
- 230
- Operator
- +
503 + 483 = ___
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Answer: 986
- Operand1
- 503
- Operand2
- 483
- Operator
- +
523 + 103 = ___
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Answer: 626
- Operand1
- 523
- Operand2
- 103
- Operator
- +
324 + 452 = ___
Show answer
Answer: 776
- Operand1
- 324
- Operand2
- 452
- Operator
- +
249 + 450 = ___
Show answer
Answer: 699
- Operand1
- 249
- Operand2
- 450
- 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.