3RD GRADE MATH - THREE DIGIT SUBTRACTION WITH REGROUPING — Steemit - Free Printable

$3RD GRADE MATH - THREE DIGIT SUBTRACTION WITH REGROUPING — Steemit$

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Show Answer Key & Explanations Step-by-step solution for: 3RD GRADE MATH - THREE DIGIT SUBTRACTION WITH REGROUPING — Steemit

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Let's solve each subtraction problem in the worksheet step by step, using regrouping (borrowing) where needed. The first one is already solved as an example:

---

🔹 Example:

```
6 7 5
- 3 2 8
-------
3 4 7
```

Explanation:
- Units place: 5 - 8 → can't do, so borrow 1 from tens place.
→ 15 - 8 = 7
- Tens place: 6 (after borrowing) - 2 = 4
- Hundreds place: 6 - 3 = 3
So: 347

Now let’s solve the rest.

---

🔹 1. 582 - 153

```
5 8 2
- 1 5 3
-------
```

- Units: 2 - 3 → borrow → 12 - 3 = 9
- Tens: 7 (after borrowing) - 5 = 2
- Hundreds: 5 - 1 = 4
→ 429

---

🔹 2. 867 - 508

```
8 6 7
- 5 0 8
-------
```

- Units: 7 - 8 → borrow → 17 - 8 = 9
- Tens: 5 (after borrowing) - 0 = 5
- Hundreds: 8 - 5 = 3
→ 359

---

🔹 3. 580 - 321

```
5 8 0
- 3 2 1
-------
```

- Units: 0 - 1 → borrow → 10 - 1 = 9
- Tens: 7 (after borrowing) - 2 = 5
- Hundreds: 5 - 3 = 2
→ 259

---

🔹 4. 777 - 168

```
7 7 7
- 1 6 8
-------
```

- Units: 7 - 8 → borrow → 17 - 8 = 9
- Tens: 6 (after borrowing) - 6 = 0
- Hundreds: 7 - 1 = 6
→ 609

---

🔹 5. 672 - 223

```
6 7 2
- 2 2 3
-------
```

- Units: 2 - 3 → borrow → 12 - 3 = 9
- Tens: 6 (after borrowing) - 2 = 4
- Hundreds: 6 - 2 = 4
→ 449

---

🔹 6. 490 - 177

```
4 9 0
- 1 7 7
-------
```

- Units: 0 - 7 → borrow → 10 - 7 = 3
- Tens: 8 (after borrowing) - 7 = 1
- Hundreds: 4 - 1 = 3
→ 313

---

🔹 7. 866 - 337

```
8 6 6
- 3 3 7
-------
```

- Units: 6 - 7 → borrow → 16 - 7 = 9
- Tens: 5 (after borrowing) - 3 = 2
- Hundreds: 8 - 3 = 5
→ 529

---

🔹 8. 666 - 307

```
6 6 6
- 3 0 7
-------
```

- Units: 6 - 7 → borrow → 16 - 7 = 9
- Tens: 5 (after borrowing) - 0 = 5
- Hundreds: 6 - 3 = 3
→ 359

---

🔹 9. 464 - 215

```
4 6 4
- 2 1 5
-------
```

- Units: 4 - 5 → borrow → 14 - 5 = 9
- Tens: 5 (after borrowing) - 1 = 4
- Hundreds: 4 - 2 = 2
→ 249

---

🔹 10. 933 - 626

```
9 3 3
- 6 2 6
-------
```

- Units: 3 - 6 → borrow → 13 - 6 = 7
- Tens: 2 (after borrowing) - 2 = 0
- Hundreds: 9 - 6 = 3
→ 307

---

🔹 11. 691 - 422

```
6 9 1
- 4 2 2
-------
```

- Units: 1 - 2 → borrow → 11 - 2 = 9
- Tens: 8 (after borrowing) - 2 = 6
- Hundreds: 6 - 4 = 2
→ 269

---

🔹 12. 580 - 108

```
5 8 0
- 1 0 8
-------
```

- Units: 0 - 8 → borrow → 10 - 8 = 2
- Tens: 7 (after borrowing) - 0 = 7
- Hundreds: 5 - 1 = 4
→ 472

---

🔹 13. 252 - 247

```
2 5 2
- 2 4 7
-------
```

- Units: 2 - 7 → borrow → 12 - 7 = 5
- Tens: 4 (after borrowing) - 4 = 0
- Hundreds: 2 - 2 = 0
→ 005 → 5

---

🔹 14. 612 - 104

```
6 1 2
- 1 0 4
-------
```

- Units: 2 - 4 → borrow → 12 - 4 = 8
- Tens: 0 (after borrowing) - 0 = 0
- Hundreds: 6 - 1 = 5
→ 508

---

## ✔ Final Answers:

| Problem | Answer |
|--------|--------|
| 582 - 153 | 429 |
| 867 - 508 | 359 |
| 580 - 321 | 259 |
| 777 - 168 | 609 |
| 672 - 223 | 449 |
| 490 - 177 | 313 |
| 866 - 337 | 529 |
| 666 - 307 | 359 |
| 464 - 215 | 249 |
| 933 - 626 | 307 |
| 691 - 422 | 269 |
| 580 - 108 | 472 |
| 252 - 247 | 5 |
| 612 - 104 | 508 |

---

✔ All problems solved with proper regrouping!

Let me know if you'd like a printable version or visual steps for any of them!

Parent Tip: Review the logic above to help your child master the concept of regroup 3 digit math.

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