2/10 = 20%
A value like 2/10, or 20%, shows up often in everyday life. For example, a store might offer 20% off a jacket, or 2 out of 10 students might choose the same lunch option.
To picture 20% quickly, imagine a group of 10 equal parts with 2 of them shaded. It is also about one-fifth of the whole, so you can estimate it as a small but noticeable portion.
A common mistake is thinking 20% means 20 out of 100 separate items every time. It describes the same proportion, whether the total is 10 people, 100 dollars, or 500 survey responses.