Introductory Algebra with P.O.W.E.R. Learning by Sherri Messersmith

By Sherri Messersmith

Ebook by way of Messersmith, Sherri, Perez, Lawrence, Feldman, Robert

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Use the properties to help you combine like terms in an expression. 8, and complete the exercises. Complete the Chapter Review and Chapter Test. How did you do? • How did you perform on the goals for the • • chapter? If you had the chance to do this chapter over, what would you do differently? Think of a job you might like to have and describe how you would need to use what you have just learned to effectively do that job. R. framework helped you master the objectives of this chapter? Where else could you use this framework?

9 Ϫ 6)3 ؒ 2 33 ؒ 2 ϭ 26 Ϫ 4 ؒ 5 26 Ϫ 20 27 ؒ 2 ϭ 6 54 ϭ 6 ϭ9 20 CHAPTER 1 The Real Number System and Geometry Parentheses Multiply. Exponent Subtract. Multiply. Divide. indd Page 21 8/17/12 1:17 PM user-f498 /207/MH01613/mes06260_disk1of1/0073406260/mes06260_pagefiles IA— [YOU TRY 5] Evaluate: a) 35 Ϫ 2 ؒ 6 ϩ 1 b) 3 ؒ 12 Ϫ (7 Ϫ 4)3 Ϭ 9 c) d) 112 Ϫ 7 ؒ 3 20(9 Ϫ 4) 9 ϩ 2[23 Ϫ 4(1 ϩ 2)] Using Technology We can use a graphing calculator to check our answer when we evaluate an expression by hand. The order of operations is built into the calculator.

13) Write each fraction in lowest terms. 23) Find the least common denominator for each group of fractions. a) c) 9 12 b) 84 35 d) 54 72 120 280 14) Write each fraction in lowest terms. a) 21 35 b) 48 80 c) 125 500 d) 900 450 22) Find the least common multiple of 12 and 9. a) 9 11 , 10 30 c) 4 1 3 , , 9 6 4 b) 7 5 , 8 12 24) Find the least common denominator for each group of fractions. Objective 3: Multiply and Divide Fractions a) 3 2 , 14 7 c) 29 3 9 , , 30 4 20 b) 17 3 , 25 10 25) Add or subtract.

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