Grade 4 Maths Resources (1.4.1 Addition of 3 digit numbers with ... - Free Printable

Let's solve each addition problem step by step. We'll add the numbers vertically, carrying over when necessary.

---

1) 322 + 416 + 354

```
322
+ 416
+ 354
------
```

Add column by column from right to left:

- Units: 2 + 6 + 4 = 12 → write down 2, carry over 1
- Tens: 2 + 1 + 5 + 1 (carry) = 9
- Hundreds: 3 + 4 + 3 = 10

So: 1092

---

2) 200 + 506 + 517

```
200
+ 506
+ 517
------
```

- Units: 0 + 6 + 7 = 13 → write 3, carry 1
- Tens: 0 + 0 + 1 + 1 = 2
- Hundreds: 2 + 5 + 5 = 12

So: 1223

---

3) 155 + 155 + 155

```
155
+ 155
+ 155
------
```

- Units: 5 + 5 + 5 = 15 → write 5, carry 1
- Tens: 5 + 5 + 5 + 1 = 16 → write 6, carry 1
- Hundreds: 1 + 1 + 1 + 1 = 4

So: 465

---

4) 560 + 338 + 103

Wait — the third number is written as "+ 1 0 3" → so it's 103

```
560
+ 338
+ 103
------
```

- Units: 0 + 8 + 3 = 11 → write 1, carry 1
- Tens: 6 + 3 + 0 + 1 = 10 → write 0, carry 1
- Hundreds: 5 + 3 + 1 + 1 = 10

So: 1001

---

5) 614 + 333 + 258

```
614
+ 333
+ 258
------
```

- Units: 4 + 3 + 8 = 15 → write 5, carry 1
- Tens: 1 + 3 + 5 + 1 = 10 → write 0, carry 1
- Hundreds: 6 + 3 + 2 + 1 = 12

So: 1205

---

6) 260 + 541 + 220

```
260
+ 541
+ 220
------
```

- Units: 0 + 1 + 0 = 1
- Tens: 6 + 4 + 2 = 12 → write 2, carry 1
- Hundreds: 2 + 5 + 2 + 1 = 10

So: 1021

---

7) 660 + 244 + 176

```
660
+ 244
+ 176
------
```

- Units: 0 + 4 + 6 = 10 → write 0, carry 1
- Tens: 6 + 4 + 7 + 1 = 18 → write 8, carry 1
- Hundreds: 6 + 2 + 1 + 1 = 10

So: 1080

---

8) 126 + 327 + 172

```
126
+ 327
+ 172
------
```

- Units: 6 + 7 + 2 = 15 → write 5, carry 1
- Tens: 2 + 2 + 7 + 1 = 12 → write 2, carry 1
- Hundreds: 1 + 3 + 1 + 1 = 6

So: 625

---

9) 711 + 321 + 134

```
711
+ 321
+ 134
------
```

- Units: 1 + 1 + 4 = 6
- Tens: 1 + 2 + 3 = 6
- Hundreds: 7 + 3 + 1 = 11

So: 1166

---

10) 560 + 324 + 436

```
560
+ 324
+ 436
------
```

- Units: 0 + 4 + 6 = 10 → write 0, carry 1
- Tens: 6 + 2 + 3 + 1 = 12 → write 2, carry 1
- Hundreds: 5 + 3 + 4 + 1 = 13

So: 1320

---

11) 236 + 327 + 272

```
236
+ 327
+ 272
------
```

- Units: 6 + 7 + 2 = 15 → write 5, carry 1
- Tens: 3 + 2 + 7 + 1 = 13 → write 3, carry 1
- Hundreds: 2 + 3 + 2 + 1 = 8

So: 835

---

12) 427 + 188 + 210

```
427
+ 188
+ 210
------
```

- Units: 7 + 8 + 0 = 15 → write 5, carry 1
- Tens: 2 + 8 + 1 + 1 = 12 → write 2, carry 1
- Hundreds: 4 + 1 + 2 + 1 = 8

So: 825

---

13) 626 + 348 + 244

```
626
+ 348
+ 244
------
```

- Units: 6 + 8 + 4 = 18 → write 8, carry 1
- Tens: 2 + 4 + 4 + 1 = 11 → write 1, carry 1
- Hundreds: 6 + 3 + 2 + 1 = 12

So: 1218

---

14) 148 + 232 + 253

```
148
+ 232
+ 253
------
```

- Units: 8 + 2 + 3 = 13 → write 3, carry 1
- Tens: 4 + 3 + 5 + 1 = 13 → write 3, carry 1
- Hundreds: 1 + 2 + 2 + 1 = 6

So: 633

---

15) 922 + 235 + 165

```
922
+ 235
+ 165
------
```

- Units: 2 + 5 + 5 = 12 → write 2, carry 1
- Tens: 2 + 3 + 6 + 1 = 12 → write 2, carry 1
- Hundreds: 9 + 2 + 1 + 1 = 13

So: 1322

---

✔ Final Answers:

1) 1092
2) 1223
3) 465
4) 1001
5) 1205
6) 1021
7) 1080
8) 625
9) 1166
10) 1320
11) 835
12) 825
13) 1218
14) 633
15) 1322

---

Let me know if you'd like this in a printable format or with steps shown in a table!