The Identity of Operations

The identity of an operation is defined as an action which results in the number being manipulated, remaining unchanged.

The identity for an addition and a subtraction is zero. If zero is added to or subtracted from a number, then the sum/difference obtained is that number.

Example

The identity for a multiplication and a division is one. If a number is multiplied or divided by one, the product/quotient obtained is that number.

Example