1.	Which number is not a perfect square?
		A.	49	B.	9
		C.	25	D.	27
		Hint
	2.	Solve the equation x2 = 0.81.
		A.	none of these is correct
		B.	x = 0.9 only
		C.	x = 0.9 or x = -0.9
		D.	x = -0.9 only
		Hint
	3.	Solve x2 = 256.
		A.	x = 65,536	B.	x = 128
		C.	x = 16	D.	x = 64
		Hint
	4.	A square has an area of 1.21 cm2. What is the length of each side of the square?
		A.	1.1 cm	B.	1.05 cm
		C.	1.4641 cm	D.	0.605 cm
		Hint
	5.	Find -.
		A.	12.5	B.	-12.5
		C.	5	D.	-5
		Hint