Question

June is working on an addition problem and starts with 17,985. After she adds, she still has 17,985. Which property of addition did June use? How do you know?

Answer 1

identity element property

Explanation:

June's value did not change, so the value she added was the additive identity element: 0.

She made use of the identity element property of addition, which says that adding the identity element does not change the value.