Mixed Exercises Perform the indicated operation. 79) 23 1 8 10 5 24 80) 1 1 6 1 1 18 81) 5 1 7 4 3 4 82) 6 2 3 10 83) 4 5 8 7 4 7 84) 48 11 16 32 1 4 85) 52 3 5 17 11 20 86) 15 1 6 8 5 12 87) 9 8 1 6 88) 7 6 2 3 89) 2 11 15 7 5 6 4 9 10 90) 8 4 5 6 7 10 3 7 8 76) The Johnsons used 18 2 3 square yards (yd2) of carpet for their family room, 6 1 2 yd2 for their hallway, and 12 1 4 yd2 for their master bedroom. How much carpet did they use for all three areas? 77) Ibada has a part-time job and worked 6 1 2 hr on Monday, 3 3 4 hr on Wednesday, and 8 hr on Friday. How many total hours did he work? 78) Araceli’s sewing project needs three pieces of fabric with lengths of 3 4 , 2 1 2 , and 4 1 3 yd. What is the total amount of fabric she needs? R1) Explain how regrouping for mixed numbers is similar to regrouping for addition and subtraction of whole numbers. (Hint: Think about place value.) R2) How do adding and subtracting mixed numbers using improper fractions eliminate the need for regrouping? Putting It All Together What are your objectives? How can you accomplish each objective? 1 Review Operations with Fractions and Mixed Numbers: Sections 4.1–4.5 • Be sure that you can apply the procedures you have learned in the previous sections. • If you are not confi dent on a certain example, go back to the section that gives more explanation. • Complete the given examples on your own. • Complete You Try 1. Read the explanations, follow the examples, take notes, and complete the You Try. 266 CHAPTER 4 Adding and Subtracting Fractions www.mhhe.com/messersmith
messersmith_power_basic_college_1e_ch4_7_10
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