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Commutative Property of Addition You can add numbers in any order and the sum will be the same. EXAMPLE: 7+5= 12 and 5+7= 12 Identity Property of Addition Known as the zero property… The sum of zero and any number is that same number. EXAMPLE: 0+4= 4 and 4+0= 4 Associative Property of Addition When you group addends differently that sum will remain the same. EXAMPLE: 4+(9+2)= 15 and (4+9)+2=15 Addend Sum Difference The numbers being added together in a number sentence. The answer to an addition number sentence. The answer to a subtraction number sentence.