How is finding a fractional part of set different than finding a fractional part of a whole?

1 answer

From Internet:

Parts of a Set: Fractions | Lesson plan | Education.com

Tell them that a fraction represents a part of a set, and therefore it is not meaningful without knowing what the total of the set is. Show a set of four balls consisting of three soccer balls and one football. Ask students what fraction of this set of balls are soccer balls. Answer: three-fourths or three quarters.