1.   Find the LCM of 2, 3, and 8.
    A. 24 B. 13
    C. 1 D. 48
    Hint

  2.   Use prime factorization to find the LCM of 12 and 15.
    A. 3 ·  22 ·  5 or 60 B. 3
    C. 3 ·  22 or 12 D. 23 ·  5 or 40
    Hint

  3.   Use prime factorization to find the LCM of 3, 9, and 27.
    A. 9 B. 3
    C. 27 D. 1
    Hint

  4.   List the first four multiples of 2b.
    A. 4b, 6b, 8b, 12b B. 0, 2b, 4b, 6b
    C. 0, 4b, 8b, 12b D. 2b, 4b, 6b, 8b
    Hint

  5.   Find the LCM of 5, 15, and 20.
    A. 80 B. 120
    C. 20 D. 60
    Hint