What is $4\frac{2}{5}$ as a decimal?

Given: $4\frac{2}{5}$

Converting the above-mixed fraction into a proper fraction, we get

$4\frac{2}{5}=\frac{5\times 4+2}{5}=\frac{22}{5}$

$\frac{22}{5}$ can be written as

$\frac{22}{5}=\frac{22\times 2}{5\times 2}=\frac{44}{10}=4.4$

Therefore, $4\frac{2}{5}$ as a decimal is 4.4.