Workbook Detail
Addition Addition Three Digit — Set 28
777 + 222 = ___
Show answer
Answer: 999
- Operand1
- 777
- Operand2
- 222
- Operator
- +
681 + 300 = ___
Show answer
Answer: 981
- Operand1
- 681
- Operand2
- 300
- Operator
- +
244 + 312 = ___
Show answer
Answer: 556
- Operand1
- 244
- Operand2
- 312
- Operator
- +
200 + 720 = ___
Show answer
Answer: 920
- Operand1
- 200
- Operand2
- 720
- Operator
- +
262 + 233 = ___
Show answer
Answer: 495
- Operand1
- 262
- Operand2
- 233
- Operator
- +
162 + 230 = ___
Show answer
Answer: 392
- Operand1
- 162
- Operand2
- 230
- Operator
- +
439 + 400 = ___
Show answer
Answer: 839
- Operand1
- 439
- Operand2
- 400
- Operator
- +
126 + 402 = ___
Show answer
Answer: 528
- Operand1
- 126
- Operand2
- 402
- Operator
- +
235 + 521 = ___
Show answer
Answer: 756
- Operand1
- 235
- Operand2
- 521
- Operator
- +
630 + 128 = ___
Show answer
Answer: 758
- Operand1
- 630
- Operand2
- 128
- Operator
- +
214 + 183 = ___
Show answer
Answer: 397
- Operand1
- 214
- Operand2
- 183
- Operator
- +
140 + 522 = ___
Show answer
Answer: 662
- Operand1
- 140
- Operand2
- 522
- Operator
- +
250 + 139 = ___
Show answer
Answer: 389
- Operand1
- 250
- Operand2
- 139
- Operator
- +
322 + 311 = ___
Show answer
Answer: 633
- Operand1
- 322
- Operand2
- 311
- Operator
- +
614 + 360 = ___
Show answer
Answer: 974
- Operand1
- 614
- Operand2
- 360
- Operator
- +
540 + 428 = ___
Show answer
Answer: 968
- Operand1
- 540
- Operand2
- 428
- Operator
- +
636 + 302 = ___
Show answer
Answer: 938
- Operand1
- 636
- Operand2
- 302
- Operator
- +
105 + 491 = ___
Show answer
Answer: 596
- Operand1
- 105
- Operand2
- 491
- Operator
- +
204 + 372 = ___
Show answer
Answer: 576
- Operand1
- 204
- Operand2
- 372
- Operator
- +
244 + 321 = ___
Show answer
Answer: 565
- Operand1
- 244
- Operand2
- 321
- 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.