Understand Addition Properties: Understand the properties of addition. The associative property involves the grouping of numbers and states that the way in which numbers are grouped does not change their sum, which can be written as (a+b)+c=a+(b+c). The commutative property states that the order in which two numbers are added does not change their sum, which can be written as a+b=b+a. The identity property involves the addition of 0, stating that any number plus 0 equals the original number, which can be written as a+0=a.
Compare Given Equation: Compare the given equation with the properties of addition.The given equation is k+j=j+k. This equation shows that the sum of k and j is the same regardless of the order in which they are added. This matches the definition of the commutative property.
Choose Correct Property: Choose the correct property based on the comparison.Since the given equation shows that the order of addition does not affect the sum, the property being demonstrated is the commutative property.