The worksheet contains eight problems involving the addition of three-digit numbers. I'll provide solutions for each:

1. 235 + 149

   • 5 + 9 = 14 (write 4, carry 1)
   • 3 + 4 + 1 = 8
   • 2 + 1 = 3
   • Answer: 384

2. 235 + 180

   • 5 + 0 = 5
   • 3 + 8 = 11 (write 1, carry 1)
   • 2 + 1 + 1 = 4
   • Answer: 415

3. 328 + 537

   • 8 + 7 = 15 (write 5, carry 1)
   • 2 + 3 + 1 = 6
   • 3 + 5 = 8
   • Answer: 865

4. 345 + 587

   • 5 + 7 = 12 (write 2, carry 1)
   • 4 + 8 + 1 = 13 (write 3, carry 1)
   • 3 + 5 + 1 = 9
   • Answer: 932

5. 376 + 131

   • 6 + 1 = 7
   • 7 + 3 = 10 (write 0, carry 1)
   • 3 + 1 + 1 = 5
   • Answer: 507

6. 376 + 138

   • 6 + 8 = 14 (write 4, carry 1)
   • 7 + 3 + 1 = 11 (write 1, carry 1)
   • 3 + 1 + 1 = 5
   • Answer: 514

7. 298 + 315

   • 8 + 5 = 13 (write 3, carry 1)
   • 9 + 1 + 1 = 11 (write 1, carry 1)
   • 2 + 3 + 1 = 6
   • Answer: 613

8. 248 + 675

   • 8 + 5 = 13 (write 3, carry 1)
   • 4 + 7 + 1 = 12 (write 2, carry 1)
   • 2 + 6 + 1 = 9
   • Answer: 923

If you'd like detailed explanations for the addition process, let me know!

Here are five follow-up questions to expand on the topic:

1. What strategies can help improve speed in addition problems like these?
2. How does carrying over numbers affect the calculation process?
3. What are common mistakes in multi-digit addition, and how can they be avoided?
4. Why is understanding place value crucial for solving problems like these?
5. How can mental math be applied to solve such problems more efficiently?

Tip: Practice aligning numbers by place value to avoid errors and ensure accuracy!