Whole numbers are called integers.
There are positive integers, for example, 3, and its opposite, a negative integer, -3.
The set of all whole numbers and their opposites are
Assuming that you mean opposites (rather than oppisites), the answer will depend on what kind of opposites: additive opposites or multiplicative opposites.In the first case you have the same set as you started with: whole numbers.In the second, you will have the set that consists of the union ofall whole numbers,all unit fractions between -1 and +1. But, you have a problem with zero: its multiplicative opposite is not defined.
The set of integers (ℤ) is the set of the positive whole numbers and their additive opposites (the negative whole numbers).
That is called the set of "integers".
describe the whole numbers
integer
Apart from zero (which is its own opposite), the opposites of whole numbers are also whole numbers. You have the set of whole numbers which is also known as the set of integers.
They are called rational numbers. The set of rational numbers contains the opposites of its members.
Integer
rational
Integers are whole numbers without decimals or fractions.
A whole number is called an integer. The opposite of a whole number is a negative integer. An example would be 4 and -4.