Solve the following addition and subtraction problems: 87 - 23 + 444 = ?

Solution:

1. Subtraction:

     87
   - 23
   ----

2. Step 1: Subtract the ones column: 7 - 3 = 4.
3. Step 2: Subtract the tens column: 8 - 2 = 6.
4. The result of 87 - 23 is 64.
5. Addition: 64 + 444 = 508.

Final Answer: 508