1.	An average human heart weighs 310 grams. How many kilograms is this?
		A.	0.31	B.	0.031
		C.	31	D.	3.1
		Hint
	2.	How do you change from milligrams to grams?
		A.	Divide by 1,000.	B.	Multiply by 1,000.
		C.	Divide by 100.	D.	Multiply by 100.
		Hint
	3.	30.5 cm = ____ m.
		A.	0.305	B.	3,050
		C.	305	D.	3.05
		Hint
	4.	How many mL are in 5.2 L?
		A.	5,200	B.	0.0052
		C.	520	D.	0.052
		Hint
	5.	In a relay race for a charity, each person runs the same distance. There are 4 runners, and the total length of the relay race is 5 kilometers. How many meters does each person run?
		A.	0.5 m	B.	500 m
		C.	1.25 m	D.	1,250 m
		Hint