Video Transcript
Find the missing number. 12 plus what is equal to eight plus 12?
To help us answer this question, we need to know that you can add numbers in any order. Eight plus 12 is the same as 12 plus eight. 12 plus eight is equal to eight plus 12. The missing number was eight. The commutative property tells us that you can add the numbers in any order and the total stays the same.
