1.	Express 7,000,000,000 in scientific notation.
		A.	7 × 109	B.	7 × 108
		C.	7 × 106	D.	7 × 1012
		Hint
	2.	Express 7.6109 × 108 in standard form.
		A.	7,610,900,000	B.	0.000000076109
		C.	761,090,000	D.	76,109,000
		Hint
	3.	On July 18, 2001, the United States national debt was $5,633,569,000. Write this number in scientific notation.
		A.	5.633569 × 10-9	B.	5.633569 × 108
		C.	5.633569 × 1010	D.	5.633569 × 109
		Hint
	4.	Write 4.06 × 10-4 in standard form.
		A.	40,600	B.	0.000406
		C.	4,060	D.	0.00406
		Hint
	5.	Write 0.0000055 in scientific notation.
		A.	5.5 × 106	B.	55 × 107
		C.	5.5 × 10-6	D.	55 × 10-7
		Hint