#### Answer

$5^2;
\\5^1 \text{ or } 5;
\\1$

#### Work Step by Step

The expanded form of $324_{\text{five}}$ is:
$=(3 \times 5^2) + (2 \times 5^1) + (4 \times 1)$
Thus, the missing expressions in the given statement (in order) are:
$5^2;
\\5^1 \text{ or } 5;
\\1$