Solve Three-Digit Addition: 281 + 507 in Vertical Format

Question

$\begin{aligned} &281 \\ +& \\ &507 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

00:00 Solve

00:03 Each time we'll calculate the sum of 2 digits, and then substitute

00:06 Let's start by adding ones with ones, and substitute in ones

00:09 Add tens with tens, substitute in tens

00:14 Add hundreds with hundreds, substitute in hundreds

00:17 And this is the solution to the question

To solve this problem, we'll perform vertical addition as follows:

Step 1: Align the numbers by columns (units, tens, hundreds).
$\begin{aligned} &281 \\ +& \\ &507 \\ \hline \end{aligned}$
Step 2: Add the digits from the rightmost column to the leftmost:
- Units place: Add 1 and 7, which equals 8. No carry is needed here.
- Tens place: Add 8 and 0, which equals 8. No carry is needed here.
- Hundreds place: Add 2 and 5, which equals 7. No carry is needed here.

Therefore, the sum of $281$ and $507$ is $788$ .

The solution to the problem is $788$ .

788