Standard form - AQASmall numbers

\(10^0 = 1\)

\(10^{-1} = 0.1\)

\(10^{-2} = 0.01\)

\(10^{-3} = 0.001\)

\(10^{-4} = 0.0001\)

\(10^{-5} = 0.00001\)

\(10^{-6} = 0.000001\)

0.0005 can be written as \(5 \times 0.0001\).

\(0.0001 = 10^{-4}\)

So \(0.0005 = 5 \times 10^{-4}\)

0.03 = \(3 \times 10^{-2}\) because the 3 is 2 places away from the units column.

0.000039 = \(3.9 \times 10^{-5}\) because the 3 is 5 places away from the units column.