Workbook Detail
Addition Addition Three Digit — Set 23
310 + 586 = ___
Show answer
Answer: 896
- Operand1
- 310
- Operand2
- 586
- Operator
- +
115 + 664 = ___
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Answer: 779
- Operand1
- 115
- Operand2
- 664
- Operator
- +
313 + 665 = ___
Show answer
Answer: 978
- Operand1
- 313
- Operand2
- 665
- Operator
- +
112 + 510 = ___
Show answer
Answer: 622
- Operand1
- 112
- Operand2
- 510
- Operator
- +
547 + 112 = ___
Show answer
Answer: 659
- Operand1
- 547
- Operand2
- 112
- Operator
- +
234 + 255 = ___
Show answer
Answer: 489
- Operand1
- 234
- Operand2
- 255
- Operator
- +
310 + 576 = ___
Show answer
Answer: 886
- Operand1
- 310
- Operand2
- 576
- Operator
- +
523 + 310 = ___
Show answer
Answer: 833
- Operand1
- 523
- Operand2
- 310
- Operator
- +
435 + 402 = ___
Show answer
Answer: 837
- Operand1
- 435
- Operand2
- 402
- Operator
- +
323 + 154 = ___
Show answer
Answer: 477
- Operand1
- 323
- Operand2
- 154
- Operator
- +
168 + 401 = ___
Show answer
Answer: 569
- Operand1
- 168
- Operand2
- 401
- Operator
- +
531 + 213 = ___
Show answer
Answer: 744
- Operand1
- 531
- Operand2
- 213
- Operator
- +
601 + 143 = ___
Show answer
Answer: 744
- Operand1
- 601
- Operand2
- 143
- Operator
- +
230 + 412 = ___
Show answer
Answer: 642
- Operand1
- 230
- Operand2
- 412
- Operator
- +
472 + 407 = ___
Show answer
Answer: 879
- Operand1
- 472
- Operand2
- 407
- Operator
- +
134 + 362 = ___
Show answer
Answer: 496
- Operand1
- 134
- Operand2
- 362
- Operator
- +
615 + 251 = ___
Show answer
Answer: 866
- Operand1
- 615
- Operand2
- 251
- Operator
- +
154 + 312 = ___
Show answer
Answer: 466
- Operand1
- 154
- Operand2
- 312
- Operator
- +
562 + 227 = ___
Show answer
Answer: 789
- Operand1
- 562
- Operand2
- 227
- Operator
- +
516 + 183 = ___
Show answer
Answer: 699
- Operand1
- 516
- Operand2
- 183
- 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.