How long does it take to write it? How to structure it? How many pages are there in a 300-word essay? Luckily, in this article, you will find all the explanations. How To Write A 300 Words Essay: Most Common Mistakes To Avoid. Writing a 300-word essay may seem an easy task for you at first glance; however, you may still make some mistakes. The thing is that apart from having profound.