Remember 'commutative' for math rules means you can swap numbers and get the same answer. Subtraction is not commutative, unlike addition.
Pro Tip 2/3
Not Universal
The 'commutative' concept mainly applies to numbers, not to everyday situations. Queue order isn't commutative; the first person gets served first.
Pro Tip 3/3
Specific Operations
'Commutative' applies to specific operations in math, like addition and multiplication. Recognize a commutative operation by testing if swapping elements affects the outcome.