S9s7jyeE
3.0
CCSS.Math.Content.4.NF.B.3c
Add and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction.
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2020-12-17T17:26:56.129774Z
2020-12-17T17:26:56.129806Z
5