3rd Grade Subtraction Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the 3rd Grade subtraction worksheet.
3rd Grade Subtraction Worksheet — Level 1 — Answers
Set out each subtraction in columns. Show any regrouping.
1.
818
−758
Answer: 60
- 8 − 8 = 0
- 1 is less than 5: regroup 1 ten from the next column → 11 − 5 = 6
- 7 − 7 = 0
2.
719
−492
Answer: 227
- 9 − 2 = 7
- 1 is less than 9: regroup 1 ten from the next column → 11 − 9 = 2
- 6 − 4 = 2
3.
594
−200
Answer: 394
- 4 − 0 = 4
- 9 − 0 = 9
- 5 − 2 = 3
4.
873
−462
Answer: 411
- 3 − 2 = 1
- 7 − 6 = 1
- 8 − 4 = 4
5.
912
−408
Answer: 504
- 2 is less than 8: regroup 1 ten from the next column → 12 − 8 = 4
- 0 − 0 = 0
- 9 − 4 = 5
6.
769
−524
Answer: 245
- 9 − 4 = 5
- 6 − 2 = 4
- 7 − 5 = 2
7.
756
−401
Answer: 355
- 6 − 1 = 5
- 5 − 0 = 5
- 7 − 4 = 3
8.
636
−603
Answer: 33
- 6 − 3 = 3
- 3 − 0 = 3
- 6 − 6 = 0
9.
383
−145
Answer: 238
- 3 is less than 5: regroup 1 ten from the next column → 13 − 5 = 8
- 7 − 4 = 3
- 3 − 1 = 2
10.
536
−331
Answer: 205
- 6 − 1 = 5
- 3 − 3 = 0
- 5 − 3 = 2
11.
555
−494
Answer: 61
- 5 − 4 = 1
- 5 is less than 9: regroup 1 ten from the next column → 15 − 9 = 6
- 4 − 4 = 0
12.
813
−452
Answer: 361
- 3 − 2 = 1
- 1 is less than 5: regroup 1 ten from the next column → 11 − 5 = 6
- 7 − 4 = 3
13.
602
−238
Answer: 364
- 2 is less than 8: regroup 1 ten from the next column → 12 − 8 = 4
- 0 lent 1 to the column before, so regroup again: this column becomes 9 → 9 − 3 = 6
- 5 − 2 = 3
14.
635
−542
Answer: 93
- 5 − 2 = 3
- 3 is less than 4: regroup 1 ten from the next column → 13 − 4 = 9
- 5 − 5 = 0
15.
889
−669
Answer: 220
- 9 − 9 = 0
- 8 − 6 = 2
- 8 − 6 = 2
16.
496
−163
Answer: 333
- 6 − 3 = 3
- 9 − 6 = 3
- 4 − 1 = 3
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.
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