1.   Determine which number is not prime.
    A. 61 B. 11
    C. 57 D. 19
    Hint

  2.   Find the prime factorization of 126.
    A. 2 × 3 × 3 × 7 B. 2 × 3 × 3
    C. 2 × 2 × 3 × 3 × 7 D. 2 × 3 × 7
    Hint

  3.   Find the GCF of 16, 12, and 36.
    A. 3 B. 2
    C. 6 D. 4
    Hint

  4.   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

  5.   Find the least common multiple of 6 and 15.
    A. 3 B. 60
    C. 30 D. 15
    Hint



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