Solve the following addition and subtraction problems: 349 - 23 + 10 = ?

Solution:

1. Subtraction:

     349
   -  23
   -----

2. Step 1: Subtract the ones column: 9 - 3 = 6.
3. Step 2: Subtract the tens column: 4 - 2 = 2.
4. Step 3: Subtract the hundreds column: 3 - 0 = 3.
5. The result of 349 - 23 is 326.
6. Addition: 326 + 10 = 336.

Final Answer: 336