214 Chapter 3 Fractions and Mixed Numbers: Addition and Subtraction For Exercises 13–16, simplify the expression by using the order of operations. 3 3 3 2 8 2 16 13. 14. 21 13 5 2 13 4 15. 16. 4 9 a4 a 7 10 3 b 2 10 17. Find the perimeter of the picture. 13 4 in. 3 b 8 7 18. Refer to the table that gives the average snowfall January February March 12 10 19 10 25 10 11 4 in. for selected cities. Spartanburg, SC in. in. in. 28 10 36 10 39 10 Amarillo, TX in. in. in. 4 10 10 10 33 10 Portland, OR in. in. in. a. What was the total snowfall for the months of January, February, and March for Spartanburg? b. How much more snow did Amarillo get than Portland in the month of March? Section 3.2 19. List the first four multiples for each number. a. 7 b. 13 c. 22 20. Explain the difference between a common multiple and the least common multiple of a pair of numbers. Use the numbers 6 and 8 in your explanation. 21. List all factors for each number. a. 100 b. 65 c. 70 22. Find the prime factorization. a. 100 b. 65 c. 70 For Exercises 23–26, find the LCM by using any method. 23. 30 and 25 24. 22 and 144 25. 105 and 28 26. 16, 24, and 32 27. Sharon and Tonya signed up at a gym on the same day. Sharon will be able to go to the gym every third day and Tonya will go to the gym every fourth day. In how many days will they meet again at the gym? For Exercises 28–31, rewrite each fraction with the indicated denominator. 28. 29. 30. 31. For Exercises 32–34, fill in the blanks with , , or . 32. 33. 34. 35. Rank the following numbers from least to greatest: Section 3.3 For Exercises 36–46, add or subtract. Write the answer as a fraction simplified to lowest terms. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 11 14 4 7 3 2 2 15 5 8 1 3 7 100 33 1000 0 17 1 34 4 15 0 3 4 37 20 25 11 2 3 26 5 13 11 25 2 5 9 10 61 100 1 8 7 12 7 10 , 72 105 , 8 15 , 27 35 15 18 5 6 7 9 5 6 7 12 11 24 17 15 150 7 12 60 9 5 35 5 16 48
miller_basic_college_math_3e_ch1_3
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