10^9, 10^-8, 10^5, 10^-6, 10^0

Put in order from least to greatest.

10^-8 comes out to be a fraction so its smallest

10^-6 is next, also a fraction
anything^0=1, so 10^0=1
then they just keep going up, so its 10^5 and 10^9

10^9=1,000,000,000

10^-8=0.00000001

10^5=100,000

10^-6=0.000001

10^0=1

10^-8,10^-6,10^0,10^5,10^9

To put these numbers in order from least to greatest, we need to compare the exponents of 10. In general, if two numbers are written in exponential form with the same base (in this case, 10), the number with the smaller exponent is the smaller number.

Let's compare the exponents in ascending order:
10^-8
10^-6
10^0
10^5
10^9

Thus, putting the numbers in order from least to greatest, we have:
10^-8, 10^-6, 10^0, 10^5, 10^9