1.	Use estimation to place the decimal point in the product 18.7 × 21 = 3927.
		A.	3927.0	B.	39.27
		C.	392.7	D.	3.927
		Hint
	2.	Evaluate 4x if x = 0.016.
		A.	64	B.	0.064
		C.	0.64	D.	6.4
		Hint
	3.	Find 8k if k = 0.5238.
		A.	4.1904	B.	4.9231
		C.	5.285	D.	3.483
		Hint
	4.	Find 4 × 0.0034.
		A.	1.36	B.	0.1216
		C.	0.0126	D.	0.0136
		Hint
	5.	Write 7.2 × 106 in standard form.
		A.	7,200,000	B.	72,000,000
		C.	0.0000072	D.	720,000
		Hint