Let’s solve each addition problem step-by-step:

1. Problem (9): 115 + 329

   • $115 + 329 = 444$

2. Problem (10): 185 + 339

   • $185 + 339 = 524$

3. Problem (11): 254 + 186

   • $254 + 186 = 440$

4. Problem (12): 100 + 200

   • $100 + 200 = 300$

5. Problem (13): 199 + 1

   • $199 + 1 = 200$

6. Problem (14): 148 + 584

   • $148 + 584 = 732$

7. Problem (15): 432 + 299

   • $432 + 299 = 731$

8. Problem (16): 100 + 150

   • $100 + 150 = 250$

Would you like detailed explanations for any specific problems?

Related Questions:

1. How do you add multi-digit numbers with carrying?
2. What are some strategies to add numbers quickly in your head?
3. How can understanding place values help in addition?
4. How can you double-check your addition answers for accuracy?
5. What are the different ways to add numbers mentally?

Tip:

Always start adding from the rightmost column (units), then move to the left (tens, hundreds, etc.), carrying over any extra values as needed.