20/25 = 80%
A value like 20/25, or 80%, can show up in everyday life as a test score, a discount, or the amount of a phone battery left. It’s a way to describe how much of a whole is covered or completed.
To picture 80%, imagine four out of five equal parts shaded. You can also think of it as close to the whole, with about one-fifth missing.
A common mix-up is thinking that 80% always means a good result. For example, having 80% of a battery left is plenty, but getting 80% on a test may or may not be enough, depending on the class or goal.