Sure! Let’s solve each subtraction problem step by step. Since this is a 3rd-grade worksheet, we’ll use the standard algorithm (column subtraction), borrowing when needed.
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Row 1
1. 109 – 45
```
109
- 45
-----
```
- Ones: 9 – 5 = 4
- Tens: 0 – 4 → Can’t do, so borrow from hundreds.
- Hundreds: 1 becomes 0
- Tens: 0 becomes 10 → then 10 – 4 = 6
- Hundreds: 0 (nothing left)
✔ Answer: 64
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2. 213 – 133
```
213
- 133
-----
```
- Ones: 3 – 3 = 0
- Tens: 1 – 3 → Can’t do, borrow from hundreds.
- Hundreds: 2 → 1
- Tens: 1 becomes 11 → 11 – 3 = 8
- Hundreds: 1 – 1 = 0
✔ Answer: 80
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3. 516 – 356
```
516
- 356
-----
```
- Ones: 6 – 6 = 0
- Tens: 1 – 5 → Borrow from hundreds.
- Hundreds: 5 → 4
- Tens: 1 becomes 11 → 11 – 5 = 6
- Hundreds: 4 – 3 = 1
✔ Answer: 160
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4. 174 – 102
```
174
- 102
-----
```
- Ones: 4 – 2 = 2
- Tens: 7 – 0 = 7
- Hundreds: 1 – 1 = 0
✔ Answer: 72
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Row 2
5. 154 – 33
```
154
- 33
-----
```
- Ones: 4 – 3 = 1
- Tens: 5 – 3 = 2
- Hundreds: 1 – 0 = 1
✔ Answer: 121
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6. 201 – 20
```
201
- 20
-----
```
- Ones: 1 – 0 = 1
- Tens: 0 – 2 → Can’t do, borrow from hundreds.
- Hundreds: 2 → 1
- Tens: 0 becomes 10 → 10 – 2 = 8
- Hundreds: 1 – 0 = 1
✔ Answer: 181
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7. 153 – 141
```
153
- 141
-----
```
- Ones: 3 – 1 = 2
- Tens: 5 – 4 = 1
- Hundreds: 1 – 1 = 0
✔ Answer: 12
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8. 196 – 92
```
196
- 92
-----
```
- Ones: 6 – 2 = 4
- Tens: 9 – 9 = 0
- Hundreds: 1 – 0 = 1
✔ Answer: 104
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Row 3
9. 189 – 46
```
189
- 46
-----
```
- Ones: 9 – 6 = 3
- Tens: 8 – 4 = 4
- Hundreds: 1 – 0 = 1
✔ Answer: 143
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10. 130 – 123
```
130
- 123
-----
```
- Ones: 0 – 3 → Can’t do, borrow from tens.
- Tens: 3 → 2
- Ones: 0 becomes 10 → 10 – 3 = 7
- Tens: 2 – 2 = 0
- Hundreds: 1 – 1 = 0
✔ Answer: 7
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11. 184 – 33
```
184
- 33
-----
```
- Ones: 4 – 3 = 1
- Tens: 8 – 3 = 5
- Hundreds: 1 – 0 = 1
✔ Answer: 151
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12. 198 – 106
```
198
- 106
-----
```
- Ones: 8 – 6 = 2
- Tens: 9 – 0 = 9
- Hundreds: 1 – 1 = 0
✔ Answer: 92
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Row 4
13. 128 – 95
```
128
- 95
-----
```
- Ones: 8 – 5 = 3
- Tens: 2 – 9 → Can’t do, borrow from hundreds.
- Hundreds: 1 → 0
- Tens: 2 becomes 12 → 12 – 9 = 3
- Hundreds: 0 – 0 = 0
✔ Answer: 33
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14. 221 – 146
```
221
- 146
-----
```
- Ones: 1 – 6 → Can’t do, borrow from tens.
- Tens: 2 → 1
- Ones: 1 becomes 11 → 11 – 6 = 5
- Tens: 1 – 4 → Can’t do, borrow from hundreds.
- Hundreds: 2 → 1
- Tens: 1 becomes 11 → 11 – 4 = 7
- Hundreds: 1 – 1 = 0
✔ Answer: 75
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15. 128 – 120
```
128
- 120
-----
```
- Ones: 8 – 0 = 8
- Tens: 2 – 2 = 0
- Hundreds: 1 – 1 = 0
✔ Answer: 8
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16. 149 – 52
```
149
- 52
-----
```
- Ones: 9 – 2 = 7
- Tens: 4 – 5 → Can’t do, borrow from hundreds.
- Hundreds: 1 → 0
- Tens: 4 becomes 14 → 14 – 5 = 9
- Hundreds: 0 – 0 = 0
✔ Answer: 97
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##
✔ Final Answers (in order):
Row 1:
64, 80, 160, 72
Row 2:
121, 181, 12, 104
Row 3:
143, 7, 151, 92
Row 4:
33, 75, 8, 97
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Let me know if you’d like to see any of these explained with visuals or number lines! 😊
Parent Tip: Review the logic above to help your child master the concept of 3rd grade subtraction worksheets.
