1.	Determine which number is not prime.
		A.	11	B.	61
		C.	57	D.	19
		Hint
	2.	Find the GCF of 24 and 54.
		A.	6	B.	3
		C.	12	D.	2
		Hint
	3.	64 is a multiple of which number?
		A.	18	B.	19
		C.	16	D.	17
		Hint
	4.	What are the prime factors of 120?
		A.	2, 60	B.	2, 2, 30
		C.	2, 3, 5	D.	2, 2, 2, 3, 5
		Hint
	5.	Are 12 and 25 relatively prime? Explain.
		A.	Yes; 12 and 25 have no common factors.
		B.	Yes; 12 is even and 25 is odd.
		C.	No; 12 and 25 are not prime numbers.
		D.	No; 12 has three prime factors.
		Hint