I need to fill in the blank and find the property of addition used and in not sure how to do that

To solve this question, let's say the unknown values are x.
Part 01:
[tex]x+0=3[/tex]To solve it, you can use the Identity property.
According to this property, adding 0 to a number does not change the number.
So,
[tex]\begin{gathered} x=3 \\ 3+0=3 \end{gathered}[/tex]Part 02:
[tex]9+2=2+x[/tex]To solve it, you can use the Commutative Property.
According to this property, changing the order of addends does not change the result.
[tex]\begin{gathered} x=9 \\ 9+2=2+9 \end{gathered}[/tex]Part 03:
[tex]3+(5+6)=(3+5)+x[/tex]To solve it, you can use the Associative Property.
According to this property, you can change the grouping of the addends without changing the result.
[tex]\begin{gathered} x=6 \\ 3+(5+6)=(3+5)+6 \end{gathered}[/tex]