Calculate the Sum: Finding 3550 + 1100 Step by Step

To solve the addition problem $3550 + 1100$, let's follow these steps:

• Step 1: Align the numbers by their place values. Write $3550$ on top and $1100$ below it, such that the units digits are in the same column.
• Step 2: Add the digits in the units place (rightmost column). Since both are zero, their sum is zero.
• Step 3: Move to the tens place. Again, both digits are zero, so this also sums to zero. Write 0 in the tens place of the result.
• Step 4: Add the hundreds place. The digit 5 from $3550$ and 1 from $1100$ gives us 6. Write 6 in the hundreds place.
• Step 5: Lastly, move to the thousands place. Adding 3 and 1 gives 4. Write 4 in the thousands place.

Thus, $3550 + 1100 = 4650$.

The correct choice from the provided options is Choice 4.