Use expanded form to find the sum of two-digit and three-digit numbers.

Let's solve each addition problem using expanded form, breaking down the numbers into hundreds (H), tens (T), and ones (O), then adding each place value separately.

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1. 233 + 474

*(Given as example)*
- H: 200 + 400 = 600
- T: 30 + 70 = 100
- O: 3 + 4 = 7
→ 600 + 100 + 7 = 707

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2. 193 + 324

Break down:
- 193 = 100 + 90 + 3
- 324 = 300 + 20 + 4

Now add by place:

- H: 100 + 300 = 400
- T: 90 + 20 = 110
- O: 3 + 4 = 7

Now sum:
→ 400 + 110 + 7 = 517

✔ Final answer: 517

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3. 175 + 228

Break down:
- 175 = 100 + 70 + 5
- 228 = 200 + 20 + 8

Add by place:

- H: 100 + 200 = 300
- T: 70 + 20 = 90
- O: 5 + 8 = 13

Now sum:
→ 300 + 90 + 13 = 403

✔ Final answer: 403

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4. 541 + 286

Break down:
- 541 = 500 + 40 + 1
- 286 = 200 + 80 + 6

Add by place:

- H: 500 + 200 = 700
- T: 40 + 80 = 120
- O: 1 + 6 = 7

Now sum:
→ 700 + 120 + 7 = 827

✔ Final answer: 827

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5. 445 + 346

Break down:
- 445 = 400 + 40 + 5
- 346 = 300 + 40 + 6

Add by place:

- H: 400 + 300 = 700
- T: 40 + 40 = 80
- O: 5 + 6 = 11

Now sum:
→ 700 + 80 + 11 = 791

✔ Final answer: 791

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6. 119 + 385

Break down:
- 119 = 100 + 10 + 9
- 385 = 300 + 80 + 5

Add by place:

- H: 100 + 300 = 400
- T: 10 + 80 = 90
- O: 9 + 5 = 14

Now sum:
→ 400 + 90 + 14 = 504

✔ Final answer: 504

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7. 523 + 384

Break down:
- 523 = 500 + 20 + 3
- 384 = 300 + 80 + 4

Add by place:

- H: 500 + 300 = 800
- T: 20 + 80 = 100
- O: 3 + 4 = 7

Now sum:
→ 800 + 100 + 7 = 907

✔ Final answer: 907

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8. 667 + 328

Break down:
- 667 = 600 + 60 + 7
- 328 = 300 + 20 + 8

Add by place:

- H: 600 + 300 = 900
- T: 60 + 20 = 80
- O: 7 + 8 = 15

Now sum:
→ 900 + 80 + 15 = 995

✔ Final answer: 995

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## ✔ Final Answers Summary:

| Problem | Expanded Form | Sum |
|--------|----------------|-----|
| 193 + 324 | H: 100+300=400, T: 90+20=110, O: 3+4=7 → 400+110+7 | 517 |
| 175 + 228 | H: 100+200=300, T: 70+20=90, O: 5+8=13 → 300+90+13 | 403 |
| 541 + 286 | H: 500+200=700, T: 40+80=120, O: 1+6=7 → 700+120+7 | 827 |
| 445 + 346 | H: 400+300=700, T: 40+40=80, O: 5+6=11 → 700+80+11 | 791 |
| 119 + 385 | H: 100+300=400, T: 10+80=90, O: 9+5=14 → 400+90+14 | 504 |
| 523 + 384 | H: 500+300=800, T: 20+80=100, O: 3+4=7 → 800+100+7 | 907 |
| 667 + 328 | H: 600+300=900, T: 60+20=80, O: 7+8=15 → 900+80+15 | 995 |

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