1.	Which number is not a prime number?
		A.	51	B.	11
		C.	7	D.	31
		Hint
	2.	Which number is not a composite number?
		A.	27	B.	63
		C.	111	D.	29
		Hint
	3.	Select the correct factorization.
		A.	–49z3b2 = –1 · 7 · 7 · z · z · b · b
		B.	52b2c = 2 · 2 · 13 · b · b · c
		C.	57axy2 = 57 · a · x · y · y · y
		D.	66ax3 = 2 · 33 · a · x · x
		Hint
	4.	The product of the prime factors common to two integers is called the _____.
		A.	greatest common factor	B.	prime factorization
		C.	composite term	D.	least common denominator
		Hint
	5.	Which factor tree best represents 468?
		A.		B.
		C.		D.
		Hint