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key words: fractions; addition; subtraction; common denominators; reducing fractions. A basic lesson plan using simple geometric diagrams to understand the meaning of fractions; their interrelationships and how to add and subtract them with or without common denominators. CCSS:5.NF.1
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Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators.
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