Solve Decimal Addition: 5.1 + 2.3 Step by Step

Question

$\text{5}.1+2.3=$

00:00 Solve

00:03 We will use long addition for calculation

00:11 We will place the decimal point in the appropriate position

00:14 We will start by adding the smallest appropriate digits

00:18 We will place and continue to add and calculate

00:22 And this is the solution to the question

To solve this problem, let's follow these steps for decimal addition:

Step 1: Align the decimals of the numbers vertically, so that both $5.1$ and $2.3$ have their decimal points in the same position:

5.1
+ 2.3
---------

Step 2: Start adding from the rightmost column (the tenths position). Add the tenths: $1 + 3 = 4$ .
Step 3: Move to the left to add the units: $5 + 2 = 7$ .

Put these sums together, and we have:

5.1
+ 2.3
---------
7.4

Therefore, the sum of $5.1$ and $2.3$ is $7.4$ . This matches choice $\text{3}$ .

Thus, the correct answer is $7.4$ .

7.4