The number of words you write is important.This subject is covered in other posts in this blog.
You don’t need to count exactly how many words your text contains. This is a waste of valuable time which you should spend planning or writing your answer.
However, there is a quick way to estimate the number of words in your text. Look at some old work, for example some practice answers you wrote in preparation for the FCE exam. Count the number of words in the first three or four lines and work out the average number of words you write on one line. It’s usually around ten, but if your writing’s very big or very small, the number will be different.
Remember this number so that during the exam, you can multiply it by the number of lines you’ve written. For instance, if your average 10 words per line, you know that you need to write around 14 to 19 lines. If your average is 8, write 18 to 24 lines. And so on. This method is quick and practical and means that you’ll write the correct number of words every time.