Solve Vertical Addition: 23 + 7 Step-by-Step

Video Solution

Solution Steps

00:04 Let's solve a math problem together.

00:07 Think about combining two digits at a time.

00:10 First, add the ones place. Ones with ones.

00:14 Great! Now place the ones and move on.

00:17 Remember, you might need to carry over one.

00:20 Put a zero where there's no digit.

00:24 Next, add your tens place. Don't forget to add the one you carried.

00:28 Place your solution in the tens place. You're almost there!

00:32 And there you have it. That's how we solve this problem!

Step-by-Step Solution

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

Step 1: Write the numbers in a column, aligning them by the right:
$\begin{array}{c} 23 \\ + 7 \\ \hline \end{array}$
Step 2: Add the digits in the rightmost column (ones place):
The digits are 3 and 7. So, $3 + 7 = 10$ . Write 0 in the ones place and carry over 1 to the tens place.
$\begin{array}{c} 23 \\ + 7 \\ \hline ~~~ 0 \end{array}$
Step 3: Add the digits in the tens place:
The digits are 2 and, due to the carry, 1. So, $2 + 1 = 3$ . Write 3 in the tens place.
$\begin{array}{c} 1~~ \\ 23 \\ + 7~ \\ \hline 30 \end{array}$

Therefore, the sum of 23 and 7 is $30$ .