This will reduce "clutching" or panic (Anxiety, actually fear which disrupts thoughts).
When writing in haste we tend to: It is better to say "Toward the end of the 19th century" then to say "in 1894" when you can't remember whether it's 1884 or 1894, though approximate, may be incorrect, and will usually be marked accordingly. A qualified statement connotes a philosophic attitude, the mark of an educated man.
The following words are commonly found in essay test questions.
10 minutes - You will have a specified time to write each essay.
Aim to spend roughly 10 minutes (or more) planning and thinking.