For Exercises 83 and 84, answer true or false. 83) If two fractions have the same denominator, the fraction with the smaller numerator is closer to 0 on the number line. 84) If two fractions have the same numerator, the fraction with the smaller denominator is closer to 0 on the number line. 85) Arrange the fractions in order from smallest to largest. 3 5 , 7 8 , 9 20 , 3 4 , 7 10 86) Arrange the fractions in order from largest to smallest. 7 5 , 7 6 , 23 15 , 3 2 , 13 10 Evaluate. 87) a 11 12 2 88) a b 1 3 4 b Simplify each expression using the order of operations. 89) 15 9 7 12 3 4 90) a 3 4 3 a b 3 8 2 b 91) 17 8a 5 4 3 b 1 8 92) 4 3 a 8 7 2 3 b 93) a 3 4 1 8 2 a b 1 8 8b 94) 1 10 5 21 14 15 Mixed Exercises The remaining exercises combine adding, subtracting, multiplying, and dividing fractions and mixed numbers. 95) Which operations with fractions require getting a common denominator? 96) Explain how to multiply mixed numbers. Perform the indicated operations. 97) 25 36 20 63 98) 1 9 10 6 3 4 99) 2 1 7 3 1 2 100) 1 3 a 13 4 5 2 b 101) 3 24 5 8 7 12 102) 4 4 5 6 2 3 103) 7 5 9 2 7 8 104) 16 11 40 105) 9 20 12 106) 11 12 3 4 107) 32 a 3 2 3 108) b 19 24 3 56 5 14 109) 15 56 42 55 2 9 110) 2 9a 2 3 4 b 2 9 1) Add 3 5 1 5 : a) by drawing a fi gure to represent each fraction. b) using a number line. Find the least common multiple of each group of numbers. 2) 4 and 6 3) 8, 15, and 24 4) Write 1 2 with a denominator of 16. 5) Why does multiplying 8 9 by 3 3 result in a fraction, 24 27 , that is equivalent to 8 9 ? 6) Identify the least common denominator of 4 9 and 1 6 , then write each as an equivalent fraction with the LCD as its denominator. 7) Identify the operation(s) that require getting a common denominator to perform the operation between fractions. add subtract multiply divide 8) What is the fi rst step for multiplying or dividing mixed numbers? Perform the indicated operations. 9) 1 6 4 9 10) 7 12 1 4 11) 2 4 9 1 5 6 12) 5 2 7 2 3 8 13) 2 3 3 20 1 4 14) 1 3 7 15) 5 8 4 9 16) 4 7 8 12 2 5 17) 6 2 3 10 18) 9 10 15 19) 19 24 23 40 Fill in the blank with or . 20) 5 11 _____ 9 11 21) 5 9 _____ 7 12 22) Evaluate a 2 5 3 . b Chapter 4: Test 288 CHAPTER 4 Adding and Subtracting Fractions www.mhhe.com/messersmith
messersmith_power_basic_college_1e_ch4_7_10
To see the actual publication please follow the link above