Question

The additive identity of any rational number is _____.

• A. $0$
• B. $1$
• C. $-1$
• D. $2$

Answer 1

Answer: (A)

$0$

The additive identity property says that if you add a real number to zero or add zero to a real number, then you get the same real number back. The number zero is known as the identity element.

Then zero(0) is the additive identity of a real number and all rational numbers are real.

Hence, $0$ is the additive identity of rational numbers.