**Chapter 1 Numbers and Basic Operations and Measurement**

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Lesson 1.1 Basic Addition and Subtraction

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Lesson 1.2 Basic Multiplication and Division

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Lesson 1.3 Decimals and Fractions

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Lesson 1.4 Multiplication and Division of Fractions

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Lesson 1.5 Ratios, Proportions, and Percentages

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Lesson 1.6 Standards of Measure