1/5 = 20%
The fraction 1/5, or 20%, shows up in everyday situations such as a store discount, a survey result, or a recipe. For example, if one out of five people choose a certain option, that group represents 1/5 of the total.
To picture 1/5 quickly, imagine five equal slices of pizza or five identical sections in a bar, with one section shaded. It is a little less than one-fourth, so you can estimate it as roughly 25% when making a quick comparison.
A common mistake is thinking that 1/5 is larger than 1/4 because 5 is larger than 4. With fractions that have the same numerator, the fraction with the larger denominator is actually smaller because the whole is divided into more equal parts.