Workbook Detail
Addition Addition Three Digit — Set 19
427 + 511 = ___
Show answer
Answer: 938
- Operand1
- 427
- Operand2
- 511
- Operator
- +
333 + 226 = ___
Show answer
Answer: 559
- Operand1
- 333
- Operand2
- 226
- Operator
- +
511 + 382 = ___
Show answer
Answer: 893
- Operand1
- 511
- Operand2
- 382
- Operator
- +
246 + 531 = ___
Show answer
Answer: 777
- Operand1
- 246
- Operand2
- 531
- Operator
- +
567 + 122 = ___
Show answer
Answer: 689
- Operand1
- 567
- Operand2
- 122
- Operator
- +
561 + 228 = ___
Show answer
Answer: 789
- Operand1
- 561
- Operand2
- 228
- Operator
- +
275 + 313 = ___
Show answer
Answer: 588
- Operand1
- 275
- Operand2
- 313
- Operator
- +
284 + 312 = ___
Show answer
Answer: 596
- Operand1
- 284
- Operand2
- 312
- Operator
- +
321 + 632 = ___
Show answer
Answer: 953
- Operand1
- 321
- Operand2
- 632
- Operator
- +
247 + 151 = ___
Show answer
Answer: 398
- Operand1
- 247
- Operand2
- 151
- Operator
- +
404 + 475 = ___
Show answer
Answer: 879
- Operand1
- 404
- Operand2
- 475
- Operator
- +
152 + 514 = ___
Show answer
Answer: 666
- Operand1
- 152
- Operand2
- 514
- Operator
- +
229 + 470 = ___
Show answer
Answer: 699
- Operand1
- 229
- Operand2
- 470
- Operator
- +
445 + 233 = ___
Show answer
Answer: 678
- Operand1
- 445
- Operand2
- 233
- Operator
- +
230 + 222 = ___
Show answer
Answer: 452
- Operand1
- 230
- Operand2
- 222
- Operator
- +
210 + 437 = ___
Show answer
Answer: 647
- Operand1
- 210
- Operand2
- 437
- Operator
- +
115 + 623 = ___
Show answer
Answer: 738
- Operand1
- 115
- Operand2
- 623
- Operator
- +
653 + 220 = ___
Show answer
Answer: 873
- Operand1
- 653
- Operand2
- 220
- Operator
- +
621 + 270 = ___
Show answer
Answer: 891
- Operand1
- 621
- Operand2
- 270
- Operator
- +
831 + 147 = ___
Show answer
Answer: 978
- Operand1
- 831
- Operand2
- 147
- 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.