Section 3.5 Order of Operations and Applications of Fractions and Mixed Numbers 205 Section 3.5 Practice Exercises Study Skills Exercise When you take a test, go through the test, doing all the problems that you know first.Then go back and work on the problems that were more difficult. Give yourself a time limit for how much time you spend on each problem (maybe 3 to 5 min the first time through). Circle the importance of each statement. Not Somewhat Very important important important a. Read through the entire test first. 1 2 3 b. If time allows, go back and check 1 2 3 each problem. c. Write out all steps instead of doing the 1 2 3 work in your head. Review Exercises For Exercises 1–8, perform the indicated operation. 1. 2. 3. 4. 2 5. 6. 7. 8. For Exercises 9–12, convert the mixed number to an improper fraction. 9. 10. 11. 12. For Exercises 13–16, convert the improper fraction to a mixed number. 13. 14. 15. 16. 25 8 30 19 50 7 29 5 1 15 16 3 9 10 2 7 11 5 2 13 13 1 14 4 5 7 a1 5 6 b 24 3 5 14 3 4 7 1 9 2 2 3 5 5 8 2 1 9 16 3 7 9 7 3 10 2 14 15 4 3 7 1 4 7 Concept 1: Order of Operations For Exercises 17–34, simplify, using the order of operations. Write the answer as a mixed number, if possible. (See Examples 1–3.) 2 2 17. 18. 19. 20. 21. 22. 23. 24. 25. 1 5 2 a1 3 5 26. 27. 28. a1 1 3 3 a2 b 7 9 1 2 3 a1 b b 7 9 1 5 12 a1 2 b 4 7 b 5 5 6 a3 1 4 1 5 8 b 2 2 3 11 6 1 3 1 1 6 6 5 1 7 1 3 8 7 9 2 1 6 3 1 3 6 1 6 2 1 3 1 3 4 2 1 7 1 1 3 7 10 1 5 6 2 1 2 1 1 4 a3 2 5 b a2 1 2 b
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