Which choice shows 40+30+10 rewritten correctly using the commutative property and then simplified correctly?

Answer 1

First, we can use the commutative property to rearrange the numbers:

40 + 30 + 10 can be rewritten as 30 + 10 + 40.

Then, we can simplify the expression:

30 + 10 + 40 = 40 + 40 = 80.

So, the correct rewriting and simplification of 40 + 30 + 10 is 80.