Workbook Detail
Addition Addition Three Digit — Set 7
Exercise 1
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Answer: 504
- Operand1
- 284
- Operand2
- 220
- Operator
- +
Exercise 2
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Answer: 1066
- Operand1
- 675
- Operand2
- 391
- Operator
- +
Exercise 3
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Answer: 1050
- Operand1
- 157
- Operand2
- 893
- Operator
- +
Exercise 4
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Answer: 1013
- Operand1
- 411
- Operand2
- 602
- Operator
- +
Exercise 5
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Answer: 1247
- Operand1
- 835
- Operand2
- 412
- Operator
- +
Exercise 6
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Answer: 1110
- Operand1
- 667
- Operand2
- 443
- Operator
- +
Exercise 7
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Answer: 493
- Operand1
- 196
- Operand2
- 297
- Operator
- +
Exercise 8
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Answer: 1070
- Operand1
- 135
- Operand2
- 935
- Operator
- +
Exercise 9
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Answer: 570
- Operand1
- 121
- Operand2
- 449
- Operator
- +
Exercise 10
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Answer: 1461
- Operand1
- 971
- Operand2
- 490
- Operator
- +
Exercise 11
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Answer: 985
- Operand1
- 428
- Operand2
- 557
- Operator
- +
Exercise 12
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Answer: 1308
- Operand1
- 774
- Operand2
- 534
- Operator
- +
Exercise 13
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Answer: 1012
- Operand1
- 546
- Operand2
- 466
- Operator
- +
Exercise 14
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Answer: 1361
- Operand1
- 543
- Operand2
- 818
- Operator
- +
Exercise 15
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Answer: 1172
- Operand1
- 450
- Operand2
- 722
- Operator
- +
Exercise 16
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Answer: 1216
- Operand1
- 833
- Operand2
- 383
- Operator
- +
Exercise 17
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Answer: 1095
- Operand1
- 130
- Operand2
- 965
- Operator
- +
Exercise 18
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Answer: 1551
- Operand1
- 988
- Operand2
- 563
- Operator
- +
Exercise 19
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Answer: 741
- Operand1
- 549
- Operand2
- 192
- Operator
- +
Exercise 20
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Answer: 1701
- Operand1
- 942
- Operand2
- 759
- 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.