Add & Subtract 4-digit numbers worksheet with practice problems.

I'll solve each addition and subtraction problem step by step, carefully checking my calculations.

Let me work through all 24 problems:

Problem 1: 9281 + 6524
- 1 + 4 = 5
- 8 + 2 = 10 (write 0, carry 1)
- 2 + 5 + 1 = 8
- 9 + 6 = 15
Answer: 15805

Problem 2: 3255 - 2243
- 5 - 3 = 2
- 5 - 4 = 1
- 2 - 2 = 0
- 3 - 2 = 1
Answer: 1012

Problem 3: 7141 + 1262
- 1 + 2 = 3
- 4 + 6 = 10 (write 0, carry 1)
- 1 + 2 + 1 = 4
- 7 + 1 = 8
Answer: 8403

Problem 4: 1633 + 8218
- 3 + 8 = 11 (write 1, carry 1)
- 3 + 1 + 1 = 5
- 6 + 2 = 8
- 1 + 8 = 9
Answer: 9851

Problem 5: 5577 - 526
- 7 - 6 = 1
- 7 - 2 = 5
- 5 - 5 = 0
- 5 - 0 = 5
Answer: 5051

Problem 6: 2991 - 2197
- 1 - 7: need to borrow. 11 - 7 = 4
- 8 - 9: need to borrow. 18 - 9 = 9
- 8 - 1 = 7
- 2 - 2 = 0
Answer: 794

Problem 7: 5093 - 906
- 3 - 6: need to borrow. 13 - 6 = 7
- 8 - 0 = 8
- 0 - 9: need to borrow. 10 - 9 = 1
- 4 - 0 = 4
Answer: 4187

Problem 8: 6805 + 4143
- 5 + 3 = 8
- 0 + 4 = 4
- 8 + 1 = 9
- 6 + 4 = 10
Answer: 10948

Problem 9: 7141 - 133
- 1 - 3: need to borrow. 11 - 3 = 8
- 3 - 3 = 0
- 1 - 1 = 0
- 7 - 0 = 7
Answer: 7008

Problem 10: 6428 + 2453
- 8 + 3 = 11 (write 1, carry 1)
- 2 + 5 + 1 = 8
- 4 + 4 = 8
- 6 + 2 = 8
Answer: 8881

Problem 11: 7169 - 6794
- 9 - 4 = 5
- 6 - 9: need to borrow. 16 - 9 = 7
- 0 - 7: need to borrow. 10 - 7 = 3
- 6 - 6 = 0
Answer: 375

Problem 12: 2072 + 5795
- 2 + 5 = 7
- 7 + 9 = 16 (write 6, carry 1)
- 0 + 7 + 1 = 8
- 2 + 5 = 7
Answer: 7867

Problem 13: 6374 - 1489
- 4 - 9: need to borrow. 14 - 9 = 5
- 6 - 8: need to borrow. 16 - 8 = 8
- 2 - 4: need to borrow. 12 - 4 = 8
- 5 - 1 = 4
Answer: 4885

Problem 14: 1477 + 653
- 7 + 3 = 10 (write 0, carry 1)
- 7 + 5 + 1 = 13 (write 3, carry 1)
- 4 + 6 + 1 = 11 (write 1, carry 1)
- 1 + 1 = 2
Answer: 2130

Problem 15: 2313 - 1496
- 3 - 6: need to borrow. 13 - 6 = 7
- 0 - 9: need to borrow. 10 - 9 = 1
- 2 - 4: need to borrow. 12 - 4 = 8
- 1 - 1 = 0
Answer: 817

Problem 16: 1977 + 4008
- 7 + 8 = 15 (write 5, carry 1)
- 7 + 0 + 1 = 8
- 9 + 0 = 9
- 1 + 4 = 5
Answer: 5985

Problem 17: 5857 - 5057
- 7 - 7 = 0
- 5 - 5 = 0
- 8 - 0 = 8
- 5 - 5 = 0
Answer: 800

Problem 18: 7429 - 1496
- 9 - 6 = 3
- 2 - 9: need to borrow. 12 - 9 = 3
- 3 - 4: need to borrow. 13 - 4 = 9
- 6 - 1 = 5
Answer: 5933

Problem 19: 4849 + 4745
- 9 + 5 = 14 (write 4, carry 1)
- 4 + 4 + 1 = 9
- 8 + 7 = 15 (write 5, carry 1)
- 4 + 4 + 1 = 9
Answer: 9594

Problem 20: 1405 + 5189
- 5 + 9 = 14 (write 4, carry 1)
- 0 + 8 + 1 = 9
- 4 + 1 = 5
- 1 + 5 = 6
Answer: 6594

Problem 21: 6991 + 8218
- 1 + 8 = 9
- 9 + 1 = 10 (write 0, carry 1)
- 9 + 2 + 1 = 12 (write 2, carry 1)
- 6 + 8 + 1 = 15
Answer: 15209

Problem 22: 8838 - 7250
- 8 - 0 = 8
- 3 - 5: need to borrow. 13 - 5 = 8
- 7 - 2 = 5
- 8 - 7 = 1
Answer: 1588

Problem 23: 5123 - 1215
- 3 - 5: need to borrow. 13 - 5 = 8
- 1 - 1 = 0
- 1 - 2: need to borrow. 11 - 2 = 9
- 4 - 1 = 3
Answer: 3908

Problem 24: 9752 + 1185
- 2 + 5 = 7
- 5 + 8 = 13 (write 3, carry 1)
- 7 + 1 + 1 = 9
- 9 + 1 = 10
Answer: 10937

Final Answer:
1) 15805
2) 1012
3) 8403
4) 9851
5) 5051
6) 794
7) 4187
8) 10948
9) 7008
10) 8881
11) 375
12) 7867
13) 4885
14) 2130
15) 817
16) 5985
17) 800
18) 5933
19) 9594
20) 6594
21) 15209
22) 1588
23) 3908
24) 10937