FLORIDA Pre-Algebra Teacher’s Guide Vol. A

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LESSON GOALS • Write a given number with a power of ten in scientific notation. • Solve problems involving scientific notation. FLORIDA STANDARDS • MAFS.8.EE.1.4 Perform operations with numbers expressed in scientific notation, including problems where both decimal and scientific notation are used. use scientific notation and choose units of appropriate size for measurements of very large or very small quantities (e.g., use millimeters per year for seafloor spreading). Interpret scientific notation that has been generated by technology. • MAFS.8.EE.1.1 Know and apply the properties of integer exponents to generate equivalent numerical expressions. PACING One class period, approximately 60 minutes CONTENT BACKGROUND Lessons 1.10, 1.11, and 1.12 work together to introduce students to operations with scientific notation. From their work with exponents and understanding of scientific notation, students have seen that very large and very small numbers can be quite cumbersome. In Lesson 1.10, students learn how to add and subtract in scientific notation. In Lesson 1.11, students learn how to multiply and divide numbers in scientific notation. In Lesson 1.12, students then apply operations on numbers in scientific notation to solve problems. MATERIALS • reference Guide pages 29−31 • Practice Activity book pages 20−21 • Overview and Toolkit presentations KEYWORDS Students can preview definitions of keywords hyperlinked throughout the lesson. • distributive property • like terms • power of 10 • product of powers property • scientific notation Add and Subtract in Scientific Notation Use this guide to accompany Lesson 1.10, Semester A. 42 ADD AnD SubTr AcT In ScIenTIfIc nOTATIOn

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