Answer :
When you divide anything my ten, you move the decimal point one to the left, so the answer is 0.3 . This is the same concept as when you multiply by ten you just add another zero
In order to find the decimal of [tex] \frac{3}{10}[/tex] we are going to do 3÷10. 3÷10=0.3. So, [tex] \frac{3}{10}[/tex] as a decimal is [tex]\boxed{0.3}[/tex]. Hoped I helped. :)