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Name _______________________________________ Date __________________ Class __________________ Prime Factorization LESSON 9-2 Practice and Problem Solving: D List all of the factors of each number. Circle the prime factors. The first one is done for you. 1. 6 1; 2; 3; 6 _______________________ 4. 12 2. 9 3. 10 ________________________ 5. 21 _______________________ ________________________ 6. 31 ________________________ ________________________ Write the prime factorization of each number. The first one is done for you. 7. 9 3 _______________________ 8. 25 2 10. 14 9. 8 ________________________ 11. 12 _______________________ ________________________ 12. 15 ________________________ ________________________ 13. There are 12 chairs in the meeting hall and an odd number of tables. Each table has the same number of chairs. How many tables are there? ________________________________________________________________________________________ 14. What are two different ways that 9 can be written as a product of two numbers? ________________________________________________________________________________________ 15. Find the prime factorization of 63 with the factor ladder. The first step is done for you. 3 63 ______ ______ ______ ______ 1 Prime factorization: ______________________________________________________________ Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor. 177