"Two fifths" is a way to express a fraction, specifically the fraction 2/5. This means that if something is divided into five equal parts, two of those parts are being considered. For example, if you have a pizza cut into five slices, two fifths would mean you have two slices of that pizza. In decimal form, two fifths is equal to 0.4. This can be useful in various situations, such as calculating percentages or comparing quantities. For instance, if you want to find out what 40% of a number is, you can use the fraction two fifths to help with the calculation.