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

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

  3.   The rectangles show that the number 23 ______.
   
    A. is prime B. is composite
    C. has three factors D. is neither prime nor composite
    Hint

  4.   Find the prime factorization of 105.
    A. 3 × 5 × 7 B. 5 × 21
    C. 2 × 5 × 7 D. 5 × 15
    Hint

  5.   The volume of a box is found by multiplying its height h, length l, and width w. If the measure of the volume of a box is 130, what could its dimensions be?
   
    A. 2 by 5 by 13 B. 3 by 4 by 13
    C. 2 by 3 by 8 D. 5 by 5 by 13
    Hint