1.	If the mass of a sample is determined to be 0.078 kilogram, find the number of significant digits.
		A.	two	B.	four
		C.	one	D.	three
		Hint
	2.	How many significant digits are in the number 0.000005721?
		A.	four	B.	six
		C.	nine	D.	two
		Hint
	3.	Identify the precision unit of the ruler.
		A.	inch	B.	1 inch
		C.	inch	D.	inch
		Hint
	4.	Identify the precision unit of the scale.
		A.	10 pounds	B.	5 pounds
		C.	1 pound	D.	12 pound
		Hint
	5.	Use the correct number of significant digits to find the area of the parallelogram.
		A.	41.23 square meters	B.	41.2 square meters
		C.	41 square meters	D.	41.225 square meters
		Hint