4.5 Adding and Subtracting Mixed Numbers What are your objectives for Section 4.5? How can you accomplish each objective? 1 Add and Subtract Mixed Numbers in Mixed-Number Form • Write the procedures for Adding and Subtracting Mixed Numbers as one procedure. • Complete the given example on your own. • Complete You Try 1. 2 Add Mixed Numbers with Regrouping • Write your own explanation of how to add mixed numbers when the answer needs regrouping. • Complete the given examples on your own. • Complete You Trys 2 and 3. 3 Subtract Mixed Numbers with Regrouping • Write your own explanation of how to subtract mixed numbers when regrouping is needed. • Complete the given examples on your own. • Complete You Trys 4–6. 4 Add and Subtract Mixed Numbers Using • Write the procedure for Adding and Subtracting Mixed Numbers Using Improper Fractions in your own words. • Complete the given example on your own. • Complete You Try 7. Read the explanations, follow the examples, take notes, and complete the You Trys. 1 Add and Subtract Mixed Numbers in Mixed-Number Form How do we add mixed numbers? Let’s think about how we can add 1 1 2 1 1 4 . 1 1 1 1 1 3 2 4 5 2 4 1 5 Add the fractional parts: 1 1 . 2 1 4 1 1 5 4 2 4 5 3 4 Add the whole-number parts: 1 1 1 5 2. 11 2 1 1 1 2 11 1 3 1 4 5 4 4 5 2 4 Improper Fractions Procedure Adding Mixed Numbers To add mixed numbers, add the whole-number parts and add the fractional parts. Write the answer in lowest terms. www.mhhe.com/messersmith SECTION 4.5 Adding and Subtracting Mixed Numbers 257
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