Calculate the Sum: 2.16 + 3.214 Decimal Addition

To find the sum of $2.16$ and $3.214$, follow these steps:

• First, write the numbers vertically, aligning them by their decimal points:

$\phantom{00}2.160$
$+3.214$
$\_\_\_\_\_\_$

• Add the numbers from right to left, adding zeros if necessary to balance the number of decimal places:

• Start from the rightmost digit: $0 + 4 = 4$.

• Next column to the left: $6 + 1 = 7$.

• Next column to the left: $1 + 2 = 3$.

• Finally, add the whole number part: $2 + 3 = 5$.

• Combine the results to get the final sum.

Therefore, the sum of $2.16$ and $3.214$ is $\textbf{5.374}$.