Workbook Detail
Addition Addition Three Digit — Set 34
510 + 303 = ___
Show answer
Answer: 813
- Operand1
- 510
- Operand2
- 303
- Operator
- +
443 + 216 = ___
Show answer
Answer: 659
- Operand1
- 443
- Operand2
- 216
- Operator
- +
100 + 845 = ___
Show answer
Answer: 945
- Operand1
- 100
- Operand2
- 845
- Operator
- +
224 + 133 = ___
Show answer
Answer: 357
- Operand1
- 224
- Operand2
- 133
- Operator
- +
571 + 223 = ___
Show answer
Answer: 794
- Operand1
- 571
- Operand2
- 223
- Operator
- +
545 + 450 = ___
Show answer
Answer: 995
- Operand1
- 545
- Operand2
- 450
- Operator
- +
212 + 680 = ___
Show answer
Answer: 892
- Operand1
- 212
- Operand2
- 680
- Operator
- +
651 + 335 = ___
Show answer
Answer: 986
- Operand1
- 651
- Operand2
- 335
- Operator
- +
335 + 263 = ___
Show answer
Answer: 598
- Operand1
- 335
- Operand2
- 263
- Operator
- +
502 + 413 = ___
Show answer
Answer: 915
- Operand1
- 502
- Operand2
- 413
- Operator
- +
431 + 336 = ___
Show answer
Answer: 767
- Operand1
- 431
- Operand2
- 336
- Operator
- +
124 + 434 = ___
Show answer
Answer: 558
- Operand1
- 124
- Operand2
- 434
- Operator
- +
380 + 317 = ___
Show answer
Answer: 697
- Operand1
- 380
- Operand2
- 317
- Operator
- +
214 + 214 = ___
Show answer
Answer: 428
- Operand1
- 214
- Operand2
- 214
- Operator
- +
127 + 310 = ___
Show answer
Answer: 437
- Operand1
- 127
- Operand2
- 310
- Operator
- +
321 + 400 = ___
Show answer
Answer: 721
- Operand1
- 321
- Operand2
- 400
- Operator
- +
105 + 211 = ___
Show answer
Answer: 316
- Operand1
- 105
- Operand2
- 211
- Operator
- +
320 + 460 = ___
Show answer
Answer: 780
- Operand1
- 320
- Operand2
- 460
- Operator
- +
740 + 228 = ___
Show answer
Answer: 968
- Operand1
- 740
- Operand2
- 228
- Operator
- +
130 + 620 = ___
Show answer
Answer: 750
- Operand1
- 130
- Operand2
- 620
- 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.