1. Course 2, Lesson 4-1 Divide. 1.64 ÷ (–8) 2.–45 ÷ (–15) 3. Evaluate each expression if a = 3, b = 7, and c = 2. 4. 5. 6. 7.Stock prices fell 250 points one day and 60 points the next day. What is the average change in stock prices over the two days?

2. Course 2, Lesson 4-1 ANSWERS 1. −8 2. 3 3. −30 4. −6 5. 14 6. 3 7. –155

3. WHAT happens when you add, subtract, multiply, and divide fractions? The Number System Course 2, Lesson 4-1

4. To write fractions as decimals To write decimals as fractions Course 2, Lesson 4-1 The Number System

5. Course 2, Lesson 4-1 The Number System repeating decimal bar notation terminating decimal

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20. How did what you learned today help you answer the WHAT happens when you add, subtract, multiply, and divide fractions? Course 2, Lesson 4-1 The Number System

21. How did what you learned today help you answer the WHAT happens when you add, subtract, multiply, and divide fractions? Course 2, Lesson 4-1 The Number System Sample answers: Fractions and mixed numbers can be written as decimals. The decimal is either a terminating or repeating decimal.

22. The next lesson is about comparing and ordering rational numbers. How do you think what you learned in this lesson will connect with the next lesson? Ratios and Proportional RelationshipsThe Number System Course 2, Lesson 4-1