4th Grade Math 7.9, Fractions & Properties of Addition, Commutative & Associative

First published at 14:35 UTC on November 28th, 2019.

We can add fractions with like denominators by using properties of addition and mental math.
Commutative Property of Addition: When the order of two addends is changed, the sum is the same. We can add in any order.
Associative Property of Addition...

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