1.	Identify the precision unit of the scale below.
		A.	0.25 oz	B.	0.5 oz
		C.	1 oz	D.	0.3 oz
		Hint
	2.	Identify the precision unit of the thermometer below.
		A.	5°F	B.	1°F
		C.	10°F	D.	0.5°F
		Hint
	3.	Identify the precision unit of the clock below.
		A.	1 h	B.	3 h
		C.	1 min	D.	30 min
		Hint
	4.	Identify the weight shown on the scale using significant digits.
		A.	8.6 kg	B.	8.65 kg
		C.	8 kg	D.	8.7 kg
		Hint
	5.	Maurice Greene of the United States won the 100-meter run in the 2000 Olympics with a time of 9.87 seconds. How many significant digits are in this measurement?
		A.	3	B.	9
		C.	7	D.	8
		Hint