Printable math worksheet featuring 20 addition and subtraction exercises for 3-digit numbers, ideal for classroom or home practice.

I'll solve each of these addition and subtraction problems step by step.

Let me work through all 20 problems:

Problem 1: 896 + 787
- 6 + 7 = 13 (write 3, carry 1)
- 9 + 8 + 1 = 18 (write 8, carry 1)
- 8 + 7 + 1 = 16
- Answer: 1683

Problem 2: 954 - 556
- 4 - 6: need to borrow, 14 - 6 = 8
- 4 - 5: need to borrow, 14 - 5 = 9
- 8 - 5 = 3
- Answer: 398

Problem 3: 653 - 378
- 3 - 8: need to borrow, 13 - 8 = 5
- 4 - 7: need to borrow, 14 - 7 = 7
- 5 - 3 = 2
- Answer: 275

Problem 4: 442 - 391
- 2 - 1 = 1
- 4 - 9: need to borrow, 14 - 9 = 5
- 3 - 3 = 0
- Answer: 51

Problem 5: 598 + 998
- 8 + 8 = 16 (write 6, carry 1)
- 9 + 9 + 1 = 19 (write 9, carry 1)
- 5 + 9 + 1 = 15
- Answer: 1596

Problem 6: 835 - 368
- 5 - 8: need to borrow, 15 - 8 = 7
- 2 - 6: need to borrow, 12 - 6 = 6
- 7 - 3 = 4
- Answer: 467

Problem 7: 811 - 385
- 1 - 5: need to borrow, 11 - 5 = 6
- 0 - 8: need to borrow, 10 - 8 = 2
- 7 - 3 = 4
- Answer: 426

Problem 8: 795 - 217
- 5 - 7: need to borrow, 15 - 7 = 8
- 8 - 1 = 7
- 7 - 2 = 5
- Answer: 578

Problem 9: 996 - 674
- 6 - 4 = 2
- 9 - 7 = 2
- 9 - 6 = 3
- Answer: 322

Problem 10: 492 + 908
- 2 + 8 = 10 (write 0, carry 1)
- 9 + 0 + 1 = 10 (write 0, carry 1)
- 4 + 9 + 1 = 14
- Answer: 1400

Problem 11: 669 - 245
- 9 - 5 = 4
- 6 - 4 = 2
- 6 - 2 = 4
- Answer: 424

Problem 12: 366 - 198
- 6 - 8: need to borrow, 16 - 8 = 8
- 5 - 9: need to borrow, 15 - 9 = 6
- 2 - 1 = 1
- Answer: 168

Problem 13: 178 + 444
- 8 + 4 = 12 (write 2, carry 1)
- 7 + 4 + 1 = 12 (write 2, carry 1)
- 1 + 4 + 1 = 6
- Answer: 622

Problem 14: 693 - 398
- 3 - 8: need to borrow, 13 - 8 = 5
- 8 - 9: need to borrow, 18 - 9 = 9
- 5 - 3 = 2
- Answer: 295

Problem 15: 999 - 754
- 9 - 4 = 5
- 9 - 5 = 4
- 9 - 7 = 2
- Answer: 245

Problem 16: 549 - 255
- 9 - 5 = 4
- 4 - 5: need to borrow, 14 - 5 = 9
- 4 - 2 = 2
- Answer: 294

Problem 17: 941 + 735
- 1 + 5 = 6
- 4 + 3 = 7
- 9 + 7 = 16
- Answer: 1676

Problem 18: 396 + 854
- 6 + 4 = 10 (write 0, carry 1)
- 9 + 5 + 1 = 15 (write 5, carry 1)
- 3 + 8 + 1 = 12
- Answer: 1250

Problem 19: 849 - 207
- 9 - 7 = 2
- 4 - 0 = 4
- 8 - 2 = 6
- Answer: 642

Problem 20: 572 + 998
- 2 + 8 = 10 (write 0, carry 1)
- 7 + 9 + 1 = 17 (write 7, carry 1)
- 5 + 9 + 1 = 15
- Answer: 1570

Final Answer:
1) 1683
2) 398
3) 275
4) 51
5) 1596
6) 467
7) 426
8) 578
9) 322
10) 1400
11) 424
12) 168
13) 622
14) 295
15) 245
16) 294
17) 1676
18) 1250
19) 642
20) 1570