Hector must find the sum of 50 plus 83 plus 50 by using mental math. Which property allows Hector to simplify the equation to 50 plus 50 plus 83 and find an equivalent sum?

The commutative property of addition lets you change the order of addends without changing the sum. Hector can rearrange 50 + 83 + 50 as 50 + 50 + 83, then add the two 50s first. The correct choice is the commutative property.

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