Grade 3 - Four Digit Addition Worksheet 4 - Kidschoolz - Free Printable

Here's the solution to all eight addition problems on the worksheet, with a step-by-step explanation for each.

---

Problem 1: 7133 + 5593

```
7133
+ 5593
-------
```

- Units place: 3 + 3 = 6
- Tens place: 3 + 9 = 12 → write down 2, carry over 1
- Hundreds place: 1 + 5 + 1 (carry) = 7
- Thousands place: 7 + 5 = 12 → write down 2, carry over 1
- Ten-thousands place: 1 (carry) = 1

✔ Answer: 12726

---

Problem 2: 6775 + 5650

```
6775
+ 5650
-------
```

- Units place: 5 + 0 = 5
- Tens place: 7 + 5 = 12 → write 2, carry 1
- Hundreds place: 7 + 6 + 1 = 14 → write 4, carry 1
- Thousands place: 6 + 5 + 1 = 12 → write 2, carry 1
- Ten-thousands place: 1 (carry) = 1

✔ Answer: 12425

---

Problem 3: 8655 + 5285

```
8655
+ 5285
-------
```

- Units place: 5 + 5 = 10 → write 0, carry 1
- Tens place: 5 + 8 + 1 = 14 → write 4, carry 1
- Hundreds place: 6 + 2 + 1 = 9
- Thousands place: 8 + 5 = 13 → write 3, carry 1
- Ten-thousands place: 1 (carry) = 1

✔ Answer: 13940

---

Problem 4: 7993 + 8874

```
7993
+ 8874
-------
```

- Units place: 3 + 4 = 7
- Tens place: 9 + 7 = 16 → write 6, carry 1
- Hundreds place: 9 + 8 + 1 = 18 → write 8, carry 1
- Thousands place: 7 + 8 + 1 = 16 → write 6, carry 1
- Ten-thousands place: 1 (carry) = 1

✔ Answer: 16867

---

Problem 5: 7384 + 2464

```
7384
+ 2464
-------
```

- Units place: 4 + 4 = 8
- Tens place: 8 + 6 = 14 → write 4, carry 1
- Hundreds place: 3 + 4 + 1 = 8
- Thousands place: 7 + 2 = 9

✔ Answer: 9848

---

Problem 6: 6633 + 3203

```
6633
+ 3203
-------
```

- Units place: 3 + 3 = 6
- Tens place: 3 + 0 = 3
- Hundreds place: 6 + 2 = 8
- Thousands place: 6 + 3 = 9

✔ Answer: 9836

---

Problem 7: 7170 + 3081

```
7170
+ 3081
-------
```

- Units place: 0 + 1 = 1
- Tens place: 7 + 8 = 15 → write 5, carry 1
- Hundreds place: 1 + 0 + 1 = 2
- Thousands place: 7 + 3 = 10 → write 0, carry 1
- Ten-thousands place: 1 (carry) = 1

✔ Answer: 10251

---

Problem 8: 7325 + 3021

```
7325
+ 3021
-------
```

- Units place: 5 + 1 = 6
- Tens place: 2 + 2 = 4
- Hundreds place: 3 + 0 = 3
- Thousands place: 7 + 3 = 10 → write 0, carry 1
- Ten-thousands place: 1 (carry) = 1

✔ Answer: 10346

---

## ✔ Final Answers:

| Problem | Answer |
|---------|---------|
| 7133 + 5593 | 12726 |
| 6775 + 5650 | 12425 |
| 8655 + 5285 | 13940 |
| 7993 + 8874 | 16867 |
| 7384 + 2464 | 9848 |
| 6633 + 3203 | 9836 |
| 7170 + 3081 | 10251 |
| 7325 + 3021 | 10346 |

---

📝 Explanation Summary:

All problems are solved using column addition with carrying. Start from the rightmost digit (units place), add each column, and if the sum is 10 or more, carry the tens digit to the next column on the left. Continue until all columns are added.

This method ensures accuracy even with large numbers and reinforces place value understanding — essential for elementary math!

Let me know if you’d like a printable answer key or step-by-step visuals!