Are these statements correct – permutation?

Addition: 3 + 4 + 5

Multiplication: 3 x 4 x 5

Summary:

• In addition there are 6 permutations, but the result always remains the same because addition is commutative.
• In multiplication there are also 6 permutations, and the result remains the same because multiplication is commutative.

In both cases there are 6 permutations , but the main difference is that addition has no "intermediate steps" (there are no intermediate results ), while in multiplication the order of the calculation steps can theoretically be different.