Inverse operations are opposite operations that undo each other. Addition and subtraction are inverse operations. Multiplication and division are inverse operations.
Inverse functions? (not sure what you mean)
Two operations are said to be inverse if one undoes the action of the other.
Inverse operations. Additive inverse is not one operation but they are elements of a set.
operations of sets in algebra
The names of inverse operations depend on the operations, not on whether they are applied to fractions or other kinds of numbers.