Section 1.2 Fractions Review 25 3. 8 7 ÷ 12 14 ( 8 4 7 ) 4 ( 1 2 4 1 4 ) ENTER 1 ENTER MATH 4. 5 12 - 3 8 5 4 1 2 2 3 4 8 ENTER 1 ENTER MATH �� ���������������� �������� EXERCISE SET Write About It! Use complete sentences to explain the meaning of the given term or process. 1. Fraction 2. Simplifying a fraction to lowest terms 3. Prime number 4. Composite number 5. Prime factorization of a number 6. (a) Equivalent fractions (b) Converting a fraction to an equivalent fraction 7. (a) Least common denominator (b) Finding the LCD between two fractions 8. Multiplying fractions 9. Dividing fractions 10. (a) Adding fractions (b) Subtracting fractions Determine if the statement is true or false. If a statement is false, explain why. 11. The fraction 2 + 3 5 + 3 simplifies to 2 5 . 12. All odd numbers are prime numbers. 13. The only even prime number is the number 2. 14. The LCD of 3 4 , 5 6 , and 1 12 is 24. 15. The number 0 has a reciprocal. 16. 4 ÷ 1 8 = 1 4 3 1 8 17. 1 2 + 1 5 = 2 7 18. 3 7 - 1 3 = 2 4 = 1 2 Practice Makes Perfect! Write the prime factorization of each number. (See Objective 1.) 19. 12 20. 27 21. 80 22. 84 23. 144 24. 210 Write a fraction that represents the given quantity. (See Objective 2.) 25. As of June 30, 2010, there were approximately 3835 million people living in Asia and approximately 825 million Internet users in Asia. Write a fraction that represents the portion of Internet users in Asia. (Source: http://internetworldstats.com/america.htm) 26. As of June 30, 2010, there were approximately 344 million people living in North America and approximately 226 million Internet users. Write a fraction that represents the portion of Internet users in North America. (Source: http://internetworldstats.com/america.htm) 27. California had a total of 53 members of the U.S. House of Representatives serving in the 111th Congress and 34 representatives were Democrats. Write a fraction that represents the portion of Democrats who served as representatives for California. (http://www.house.gov) 28. Georgia had a total of 13 members of the U.S. House of Representatives serving in the 111th Congress and 7 representatives were Republicans. Write a fraction that represents the portion of Republicans who served as representatives for Georgia. (http://www.house.gov) 29. The top 10 U.S. Internet search providers processed a total of approximately 9,200,000,000 search requests, during August 2010. Google processed about 6,000,000,000 and Yahoo! processed about 1,210,000,000 search requests. Write fractions that represent the portion of Google search requests
hendricks_beginning_algebra_1e_ch1_3
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