Solve Vertical Addition: 15 + 56 Step by Step

Video Solution

Solution Steps

00:00 Solve

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

00:06 Let's start by adding ones with ones

00:09 Write down the ones, and remember 1 carried over

00:12 Add tens with tens, remember to add 1 to the calculation

00:19 Write in the tens place

00:22 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we will perform vertical addition on the numbers 15 and 56.

Let's break down the steps:

Step 1: Write the numbers vertically aligning the digits.
$\begin{array}{c} \phantom{0}15 \\ +56 \\ \underline{\phantom{776}} \end{array}$
Step 2: Add the digits in the ones place. The ones digits are 5 and 6.
$5 + 6 = 11$ .
Write down 1 in the ones place and carry over 1 to the tens place.
Step 3: Add the digits in the tens place, including the carried over 1. The tens digits are 1 and 5.
$1 + 5 + 1 = 7$ .
Write down 7 in the tens place.

The complete addition is:

\begin{array}{c} \phantom{0}15 \\ +56 \\ \underline{71} \end{array}

Thus, the solution to the problem is $\boxed{71}$ .