A primary goal of this Unit is to help students learn some new and useful strategies for finding factors and multiples of whole numbers. They can apply these strategies to gain familiarity with prime and composite numbers and to solve real-life problems. Common multiples and common factors are at the heart of many major mathematical ideas that are developed in middle grades. For example, common factors and multiples are building blocks for equivalent fractions, which in turn provide a foundation for operations with fractions and proportional reasoning.
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