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One-fifth and four-fifths makes a whole.
1 fifth is one equal piece of a whole that was divided into 5 equal pieces.
One fifth is equivalent to 0.2 or 20%. This fraction represents dividing a whole into five equal parts, with one of those parts being the one fifth. In decimal form, one fifth is expressed as 0.2, which can also be represented as 20% when converted to a percentage.
One whole minus two fifths is three fifths.
There are five fifths in one whole. In fractions, a fifth represents one part out of five equal parts. Therefore, when you have five fifths combined, you have a whole unit.