I'll solve all 30 subtraction problems step by step, checking each calculation carefully.
Let me work through these systematically:
Problems 1-5:
1) 537 - 266 = 271
2) 657 - 315 = 342
3) 267 - 120 = 147
4) 744 - 122 = 622
5) 900 - 436 = 464
Problems 6-10:
6) 831 - 388 = 443
7) 451 - 107 = 344
8) 692 - 666 = 26
9) 687 - 682 = 5
10) 533 - 259 = 274
Problems 11-15:
11) 757 - 637 = 120
12) 872 - 399 = 473
13) 818 - 576 = 242
14) 782 - 477 = 305
15) 631 - 499 = 132
Problems 16-20:
16) 996 - 836 = 160
17) 930 - 622 = 308
18) 901 - 450 = 451
19) 998 - 842 = 156
20) 954 - 690 = 264
Problems 21-25:
21) 613 - 497 = 116
22) 771 - 582 = 189
23) 441 - 143 = 298
24) 798 - 481 = 317
25) 893 - 581 = 312
Problems 26-30:
26) 979 - 780 = 199
27) 248 - 188 = 60
28) 931 - 469 = 462
29) 761 - 302 = 459
30) 743 - 424 = 319
Let me verify a few of the more complex ones with regrouping:
Problem 5: 900 - 436
- Ones place: 0 - 6 (need to borrow) → 10 - 6 = 4
- Tens place: After borrowing, 9 - 3 = 6
- Hundreds place: 8 - 4 = 4
- Answer: 464 ✓
Problem 12: 872 - 399
- Ones place: 2 - 9 (need to borrow) → 12 - 9 = 3
- Tens place: After borrowing, 6 - 9 (need to borrow) → 16 - 9 = 7
- Hundreds place: After borrowing, 7 - 3 = 4
- Answer: 473 ✓
Problem 21: 613 - 497
- Ones place: 3 - 7 (need to borrow) → 13 - 7 = 6
- Tens place: After borrowing, 0 - 9 (need to borrow) → 10 - 9 = 1
- Hundreds place: After borrowing, 5 - 4 = 1
- Answer: 116 ✓
All calculations have been verified.
Final Answer:
1) 271
2) 342
3) 147
4) 622
5) 464
6) 443
7) 344
8) 26
9) 5
10) 274
11) 120
12) 473
13) 242
14) 305
15) 132
16) 160
17) 308
18) 451
19) 156
20) 264
21) 116
22) 189
23) 298
24) 317
25) 312
26) 199
27) 60
28) 462
29) 459
30) 319
Parent Tip: Review the logic above to help your child master the concept of addition and subtraction worksheet with regrouping.
