Key Idea1 of 3
Swapping the Parts
In addition, you can swap the two parts and still get the same whole. 6 + 3 = 9 and 3 + 6 = 9. This is called the commutative property — a fancy name for 'order does not matter in addition.'
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Mathematics — Fact Families: Related Addition and Subtraction
In addition, you can swap the two parts and still get the same whole. 6 + 3 = 9 and 3 + 6 = 9. This is called the commutative property — a fancy name for 'order does not matter in addition.'