3rd Grade Subtraction Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 3rd Grade subtraction worksheet.
3rd Grade Subtraction Worksheet — Level 1 — Practice Set 2 — Answers
Set out each subtraction in columns. Show any regrouping.
1.
814
−743
Answer: 71
- 4 − 3 = 1
- 1 is less than 4: regroup 1 ten from the next column → 11 − 4 = 7
- 7 − 7 = 0
2.
855
−808
Answer: 47
- 5 is less than 8: regroup 1 ten from the next column → 15 − 8 = 7
- 4 − 0 = 4
- 8 − 8 = 0
3.
765
−649
Answer: 116
- 5 is less than 9: regroup 1 ten from the next column → 15 − 9 = 6
- 5 − 4 = 1
- 7 − 6 = 1
4.
389
−122
Answer: 267
- 9 − 2 = 7
- 8 − 2 = 6
- 3 − 1 = 2
5.
702
−145
Answer: 557
- 2 is less than 5: regroup 1 ten from the next column → 12 − 5 = 7
- 0 lent 1 to the column before, so regroup again: this column becomes 9 → 9 − 4 = 5
- 6 − 1 = 5
6.
421
−311
Answer: 110
- 1 − 1 = 0
- 2 − 1 = 1
- 4 − 3 = 1
7.
730
−337
Answer: 393
- 0 is less than 7: regroup 1 ten from the next column → 10 − 7 = 3
- 2 is less than 3: regroup 1 ten from the next column → 12 − 3 = 9
- 6 − 3 = 3
8.
740
−559
Answer: 181
- 0 is less than 9: regroup 1 ten from the next column → 10 − 9 = 1
- 3 is less than 5: regroup 1 ten from the next column → 13 − 5 = 8
- 6 − 5 = 1
9.
368
−141
Answer: 227
- 8 − 1 = 7
- 6 − 4 = 2
- 3 − 1 = 2
10.
769
−567
Answer: 202
- 9 − 7 = 2
- 6 − 6 = 0
- 7 − 5 = 2
11.
727
−549
Answer: 178
- 7 is less than 9: regroup 1 ten from the next column → 17 − 9 = 8
- 1 is less than 4: regroup 1 ten from the next column → 11 − 4 = 7
- 6 − 5 = 1
12.
285
−156
Answer: 129
- 5 is less than 6: regroup 1 ten from the next column → 15 − 6 = 9
- 7 − 5 = 2
- 2 − 1 = 1
13.
244
−201
Answer: 43
- 4 − 1 = 3
- 4 − 0 = 4
- 2 − 2 = 0
14.
637
−171
Answer: 466
- 7 − 1 = 6
- 3 is less than 7: regroup 1 ten from the next column → 13 − 7 = 6
- 5 − 1 = 4
15.
845
−192
Answer: 653
- 5 − 2 = 3
- 4 is less than 9: regroup 1 ten from the next column → 14 − 9 = 5
- 7 − 1 = 6
16.
484
−158
Answer: 326
- 4 is less than 8: regroup 1 ten from the next column → 14 − 8 = 6
- 7 − 5 = 2
- 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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