Hey,
In the two numbers provided the place for "2" are very different.
In 324, the number 2 acts as the tenths place. It represents 20 in 300.
In 0.324, 2 is in the hundredths. And represents 1 because it is a small decimal. Smaller than 1 whole number.
Hope this helps!
Brainliest is always appreciated if you feel its deserved.