1.   Which number is not a factor of 315?
    A. 5 B. 3
    C. 9 D. 2
    Hint

  2.   A number is divisible by 6 if ______.
    A. the ones digit is divisible by 2, and the tens digit is divisible by 3
    B. the sum of the digits is divisible by 6
    C. the number is divisible by 2 and 3
    D. the last two digits are divisible by 2 and 3
    Hint

  3.   The number 64 is divisible by which of the following?
    A. 6 B. 5
    C. 4 D. 3
    Hint

  4.   Choose a tens digit for 2?6 so that the three-digit number is divisible by 6.
    A. 3 B. 2
    C. 0 D. 1
    Hint

  5.   Determine which expression is not a monomial.
    A. ab B. 12w(xy + z)
    C. 17p(-qr) D. -14(-st)(3u)
    Hint