Identity property of addition

The identity property for addition means that the sum of 0 and any number is that number.

Examples
27 + 0 = 0 + 27 = 27
3 + 0 = 0 + 3 = 3

The identity property for addition may be written with symbols as:

a + 0 = 0 + a = a

Also called identity property of 0 for addition, zero property of addition

See also identity element, identity property of multiplication.