Unit 5, Lesson 21# Use visual models to add two fractions with related units using the denominators 2, 3, 4, 5, 6, 8, 10, and 12

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In this lesson, students use a tape diagram to model the addition of two fractions with related units and use a number bond to rename the sum as a mixed number. Students then use a tape diagram and a number bond to model the addition of two fractions with related units and use a number bond to rename the sum as a mixed number. Finally, students add two fractions with related units without using a model and express the answer as a mixed number.