Vertical Addition: Simple addition of 3-digit and 2-digit numbers

To solve this problem effectively, we will perform vertical addition as follows:

• Step 1: Align the numbers 285 and 11 by place value:

$\begin{array}{c} ~~285 \\ +~~11 \\ \hline ~~? \\ \end{array}$

• Step 2: Add the digits in each column, starting from the rightmost (units place):

- Units Place: $5 + 1 = 6$. Write 6 in the units place.

- Tens Place: $8 + 1 = 9$. Write 9 in the tens place.

- Hundreds Place: There’s no digit to add to 2 in this column, so it remains $2$.

$\begin{array}{c} 285 \\ +11 \\ \hline 296 \\ \end{array}$

• Step 3: Compile the result to get the final sum: 296.

Therefore, the solution to the problem is $296$.

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

• Step 1: Align the numbers based on place value.
• Step 2: Add each column starting from the right (units column).
• Step 3: Carry over any values greater than 9 to the next column.

Now, let’s work through each step:

Step 1: Align the numbers vertically:

$\begin{array}{c} 352 \\ + 27 \\ \hline \end{array}$

Step 2: Add the right-most column (the units).
$2 + 7 = 9$, write $9$ in the units place.

Step 3: Move to the next column to the left (the tens).
$5 + 2 = 7$, write $7$ in the tens place (no carrying needed).

Step 4: Move to the left-most column (the hundreds).
$3$ remains $3$ as there is nothing to add, so write $3$ in the hundreds place.

Thus, the result when you add the numbers is:

$\begin{array}{c} 352 \\ + 27 \\ \hline 379 \\ \end{array}$

Therefore, the sum of $352$ and $27$ is $379$.

To solve this addition problem, follow these steps:

• Step 1: Add the digits in the units place: $3 + 5 = 8$. Write down 8 in the units place.
• Step 2: Add the digits in the tens place: $2 + 5 = 7$. Write down 7 in the tens place. No carrying is needed.
• Step 3: Add the digits in the hundreds place: $4 + 0 = 4$. Write down 4 in the hundreds place.

After performing these steps, the final sum is:

$\begin{aligned} &423 \\ +& \\ &~~55 \\ \hline &478 \\ \end{aligned}$

Therefore, the sum of 423 and 55 is $478$.

To solve this problem, we'll perform vertical addition step-by-step:

• Step 1: Align the numbers by their place values (units, tens, hundreds).
  $\begin{array}{c} 571 \\ + ~24 \\ \underline{\phantom{776}} \\ \end{array}$
• Step 2: Start adding from the rightmost column (units place).
  $\begin{aligned} 1 + 4 = 5 \end{aligned}$
• Step 3: Move to the tens column.
  $\begin{aligned} 7 + 2 = 9 \end{aligned}$
• Step 4: Move to the hundreds column. Since there is no number to add to 5, it remains 5.
  $\begin{aligned} 5 + 0 = 5 \end{aligned}$
• Thus, the sum of 571 and 24 is $595$.

Conclusion: The solution to the problem is $595$, which corresponds to choice 1 in the provided options.