Unit 9 Contents

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5. Use your calculator to check Brandon's keystrokes.
1. What does your display read?
2. Are Brandon's keystrokes correct?
6. Use your calculator to check the prime factorization you wrote for 180 in Question 4C. Record your keystrokes.
7. Maya and Nicholas each started a prime factorization tree for 120. Finish each of their trees. Write a number sentence showing each number as a product of its prime factors using exponents.

8. Linda said she found the prime factorization for 485.
   
   97 5 = 485
   
   Did Linda find the prime factorization? How do you know? If not, find the prime factorization.
9. Maria said she found the prime factorization for 846.
   
   3 141 2 = 846
   
   Did Maria find the prime factorization? How do you know? If not, find the prime factorization.

Check-In: Question 10

10. Find all the factors and the prime factorization of each number.
    
    Example: All the factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The prime factorization is
    36 = 2² 3².
1. 54
2. 24