alleryAdding zero to any whole number leaves it unchanged. What is zero called for addition?
AAdditive identity
BClosure element
CSuccessor number
DCommon divisor
Answer & Solution
Correct answer: A. Additive identity
1. For every whole number a, a + 0 = a.
2. A number that leaves others unchanged under addition is the additive identity.
3. The multiplicative identity is 1, since a x 1 = a.
_Source: Wikipedia, Natural number, Algebraic properties satisfied by the natural numbers_
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