Addition with Regrouping worksheet for practicing three-digit addition problems.

The task involves solving addition problems with regrouping. Let's solve each problem step by step.

---

Problem 1:

```
523
+ 128
------
```

#### Step-by-Step Solution:
1. Ones place:
\( 3 + 8 = 11 \)
Write down 1 and carry over 1 to the tens place.

2. Tens place:
\( 2 + 2 + 1 (\text{carry}) = 5 \)
Write down 5.

3. Hundreds place:
\( 5 + 1 = 6 \)
Write down 6.

#### Final Answer:
```
523
+ 128
------
651
```

---

Problem 2:

```
465
+ 192
------
```

#### Step-by-Step Solution:
1. Ones place:
\( 5 + 2 = 7 \)
Write down 7.

2. Tens place:
\( 6 + 9 = 15 \)
Write down 5 and carry over 1 to the hundreds place.

3. Hundreds place:
\( 4 + 1 + 1 (\text{carry}) = 6 \)
Write down 6.

#### Final Answer:
```
465
+ 192
------
657
```

---

Problem 3:

```
289
+ 204
------
```

#### Step-by-Step Solution:
1. Ones place:
\( 9 + 4 = 13 \)
Write down 3 and carry over 1 to the tens place.

2. Tens place:
\( 8 + 0 + 1 (\text{carry}) = 9 \)
Write down 9.

3. Hundreds place:
\( 2 + 2 = 4 \)
Write down 4.

#### Final Answer:
```
289
+ 204
------
493
```

---

Problem 4:

```
343
+ 174
------
```

#### Step-by-Step Solution:
1. Ones place:
\( 3 + 4 = 7 \)
Write down 7.

2. Tens place:
\( 4 + 7 = 11 \)
Write down 1 and carry over 1 to the hundreds place.

3. Hundreds place:
\( 3 + 1 + 1 (\text{carry}) = 5 \)
Write down 5.

#### Final Answer:
```
343
+ 174
------
517
```

---

Problem 5:

```
617
+ 289
------
```

#### Step-by-Step Solution:
1. Ones place:
\( 7 + 9 = 16 \)
Write down 6 and carry over 1 to the tens place.

2. Tens place:
\( 1 + 8 + 1 (\text{carry}) = 10 \)
Write down 0 and carry over 1 to the hundreds place.

3. Hundreds place:
\( 6 + 2 + 1 (\text{carry}) = 9 \)
Write down 9.

#### Final Answer:
```
617
+ 289
------
906
```

---

Problem 6:

```
592
+ 329
------
```

#### Step-by-Step Solution:
1. Ones place:
\( 2 + 9 = 11 \)
Write down 1 and carry over 1 to the tens place.

2. Tens place:
\( 9 + 2 + 1 (\text{carry}) = 12 \)
Write down 2 and carry over 1 to the hundreds place.

3. Hundreds place:
\( 5 + 3 + 1 (\text{carry}) = 9 \)
Write down 9.

#### Final Answer:
```
592
+ 329
------
921
```

---

Final Answers:

1. \( 651 \)
2. \( 657 \)
3. \( 493 \)
4. \( 517 \)
5. \( 906 \)
6. \( 921 \)

Boxed Final Answer:
\[
\boxed{651, 657, 493, 517, 906, 921}
\]