2.2 Vocab

Question 1

Additive Identity

Answer 1

The number 0 is called the additive identity because the sum of 0 and any number is that number.
a+0=0+a=a

Question 2

Additive Inverse

Answer 2

The additive inverse of any number x is the number that gives 0 when added to x. The additive inverse of -5 is 5.