5.1-lecture notes for students in high school.pptx

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1. 5-1 Multiplication and Division of Rational Numbers Multiplication of Rational Numbers Properties of Multiplication of Rational Numbers Multiplication with Mixed Numbers Division of Rational Numbers Estimation and Mental Math with Rational Numbers Extending the Notion of Exponents Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

2. Multiplication of Rational Numbers Multiplication as repeated addition Multiplication as part of an area Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

3. If are any rational numbers, then Multiplication of Rational Numbers Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

4. Example 1 If of the population of a certain city are college graduates and of the city’s college graduates are female, what fraction of the population of that city is female college graduates? of the population is female college graduates. Copyright © 2013, 2010, and 2007, Pearson Education, Inc.

5. Multiplicative Identity The number 1 is the unique number such that for every rational number Properties of Multiplication of Rational Numbers Copyright © 2013, 2010, and 2007, Pearson Education, Inc.