Question

which is less than or equal to?: 5.1 x 10^-3 ______ 5.1 x 10^-4

Answer 1

$\begin{gathered} 5.1\times10^{-3}=0.0051 \\ 5.1\times10^{-4}=0.00051 \end{gathered}$

Then

$5.1\times10^{-3}>5.1\times10^{-4}$