Which equation demonstrates the additive identity property of zero?

Which equation demonstrates the additive identity property of zero?

• A. A + 0 = A
• B. A + 0 = 0
• C. 0 + A = A
• D. A + B = A

Answer: (A)

Additive identity means that adding zero to any number leaves that number unchanged. So when zero is added to a number A, the result is A, which is exactly shown by the equation A + 0 = A. This is the clearest way to express the idea that zero doesn’t change the value. (0 + A = A would express the same idea due to commutativity, but the form A + 0 = A directly demonstrates the property.)

Additive identity means that adding zero to any number leaves that number unchanged. So when zero is added to a number A, the result is A, which is exactly shown by the equation A + 0 = A. This is the clearest way to express the idea that zero doesn’t change the value. (0 + A = A would express the same idea due to commutativity, but the form A + 0 = A directly demonstrates the property.)