Students subtract fractions with unlike units using the strategy of creating equivalent fractions. They solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem.
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From EngageNY.org of the New York State Education Department. Grade 5 Mathematics Module 3, Topic B, Lesson 5.
Available from engageny.org/resource/grade-5-mathematics-module-3-topic-b-lesson-5; accessed 2015-05-29.
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