Question: Which property of addition is shown?
Answer: it is commutative because it is the change of order in addends.
Question: Whitch property of addition is shown?
Answer: Identity because adding zero to a number would change it and thats what identity is.
solo level: My Solo Level is Extended abstract as I have a full understanding of the goal and I can teach others how to do it.
Next step: Take a measurement test.
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