Two fifths, this is because 5 fifths is the whole and if you already have 3 fifths you just need 2 more to make 5.
four fifths must be added to make it whole
Three fifths of a piece.
Three Fifths is not a whole number it's only 60% of a whole.
Three-fifths is a fraction and there is no sensible way to represent it as a whole number. The whole part of it is 0.
One whole and two fifths
It is 1.
5/5 is a whole, therefore is you have 3/5 you need another 2/5 to make it 5/5.
To the nearest whole number: 3
closer to one
No because an integer is a whole number