You could try 10 to the second power.
5.009 × 100
Your Mamma
1.0 × 102
22 x 52 = 100
Not sure about wrighting anything, but you could write it as 123*100 except that is NOT the exponential form.
1.6 × 103
5.009 × 100
1011
-6 = -6.0 × 100
3 = 3.0 × 100
Your Mamma
1.0 × 102
1.0 × 100 or 1.0E0
10^2
22 x 52 = 100
8 = 8.0 × 100
Not sure about wrighting anything, but you could write it as 123*100 except that is NOT the exponential form.