Fill in the blanks. Then, choose the property of addition you used. _ + 3 = 3 + 7 is it: associated property, commutative property, or identity property?

0 + _ = 5 is it: associated property, commutative property, or identity property?

2 + (6 + 8) =(2 + 6)+ _ is it: associated property, commutative property, or identity property?

can someone please help me?