Well, isn't that a happy little question! Half of two fifths is one fifth. Just imagine splitting those two little fifths right down the middle, and you'll have a lovely one fifth waiting for you. Remember, there are no mistakes, just happy accidents!
Two-fifths.Half of four is two, so half of four-fifths is two-fifths.
One half is bigger than two fifths because two fifths just before 2.5 fifths which is half.
One half is bigger then two fifths.
Nope... one half is bigger than two fifths.
Three fifths is bigger than one half. Two fifths is smaller than one half.