Skill 4A
Order Property of Addition

Even though these "Property" concepts are taught in textbooks, very few students could tell you what each one specifically means.  The different "Properties" (as they call them) are just the rules that go along with how you can add, subtract, multiply and divide numbers.  The Order Property of Addition is simply that you can add numbers in any order (hence the name Order Property) and the answer will remain the same.  This is, of course, not true with subtraction or division.  So the answer below would be an example of adding numbers in the reverse order, and without using parentheses.

Which problem is an example of the Order Property of Addition?

  A. 10 + 0 = 10
  B. (5 + 1) + 3 = 5 + (1 + 3)
  C. 5 + 7 = 7 + 5
  D. Not sure
  E. None of the above