Expand the following numbers back into ordinary notation to the correct number of significant digits.
1.) 1.58 X 104
2.) 2.05 X 10-1
3) 5.00 X 10-3
4) 3 X 105
5.) 6.080 X 10
1. 15800
2. .205
3. .005
4. 300000
5. 60.8
