1.	Use estimation to place the decimal point in the product 18.7 × 21 = 3927.
		A.	3927.0	B.	39.27
		C.	3.927	D.	392.7
		Hint
	2.	Find 6 × 18.52.
		A.	1111.2	B.	111.12
		C.	108.12	D.	111.02
		Hint
	3.	Evaluate 4x if x = 0.016.
		A.	0.64	B.	6.4
		C.	0.064	D.	64
		Hint
	4.	Write 7.2 × 106 in standard form.
		A.	720,000	B.	72,000,000
		C.	7,200,000	D.	0.0000072
		Hint
	5.	Write 1.85 × 102 in standard form.
		A.	185	B.	1.85
		C.	0.185	D.	1,850
		Hint