Solve Vertical Addition: 56 + 44 Step-by-Step

To solve this problem using vertical addition, follow these steps:

• Step 1: Write the numbers vertically, ensuring the digits are aligned by place value:

$\begin{array}{c} 56 \\ + 44 \\ \underline{\phantom{776}} \\ \end{array}$

• Step 2: Add the units digits (rightmost column). The units digit of 56 is 6, and for 44, it is 4.

Sum: $6 + 4 = 10$.

• Step 3: Write down the 0 from the sum (10) in the units place and carry over the 1 to the tens place.
• Step 4: Add the tens digits (next column to the left). The tens digit of 56 is 5, and for 44, it is 4. Add these along with the carried-over 1.

Sum: $5 + 4 + 1 = 10$.

• Step 5: Write down the full result (100) below the line.

Therefore, the sum of 56 and 44 is $\textbf{100}$.

This corresponds to answer choice 1.