Solve Vertical Addition: 954 + 72 Step-by-Step

To solve this problem, we'll follow these steps:

• Step 1: Start with the units' column addition.
• Step 2: Add the tens' column, accounting for any carryover from the units' column.
• Step 3: Add the hundreds' column, accounting for any carryover from the tens' column.

Now, let's work through each step:

Step 1: Add the units' place:
The units' place in 954 is 4, and in 72, it is 2. Add these together: $4 + 2 = 6$.
Place 6 in the units' position of our result.

Step 2: Add the tens' place:
The tens' place in 954 is 5, and in 72, it is 7. Add these together: $5 + 7 = 12$.
Since 12 is greater than 9, place 2 in the tens' position and carry over 1 to the hundreds' column.

Step 3: Add the hundreds' place:
The hundreds' place in 954 is 9. Add the carry over 1 from the tens' addition: $9 + 1 = 10$.
This gives us 0 in the hundreds' position, with another carry over 1 to the next column which becomes a thousand.
This forms 1 in the thousand's position of our result.

Therefore, the sum of 954 and 72 is $1026$.

Among the provided choices, choice 4 corresponds to this solution.