1.   Use the factor tree to write the prime factorization of 120.
    A. 2 × 3 × 5 B. 2 × 2 × 2 × 3 × 5
    C. 2 × 2 × 3 × 5 D. 2 × 60
    Hint

  2.   What are the prime factors of 120?
    A. 2, 2, 2, 3, 5 B. 2, 60
    C. 2, 2, 30 D. 2, 3, 5
    Hint

  3.   Which of the following numbers is prime?
    A. 15 B. 1
    C. 5 D. 9
    Hint

  4.   Write the prime factorization of 204.
    A. 2 × 2 × 3 × 17 B. 2 × 3 × 17
    C. 2 × 17 D. 6 × 17
    Hint

  5.   What are the prime factors of 810?
    A. 2, 5, 9 B. 3, 4, 5
    C. 3, 5 D. 2, 3, 5
    Hint



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