ANSWER
[tex]3.167\cdot10^3[/tex]EXPLANATION
The given number is 3 thousand, 16 tens, 7 ones.
First, let us write this in ordinary form:
[tex]\begin{gathered} 3000+16(10)+7 \\ 3000+160+7 \\ \Rightarrow3167 \end{gathered}[/tex]To write this in standard form, we have to express it as a product of a number between 1 and 10 and a power of 10.
That is:
[tex]3167\to3.167\cdot10^3[/tex]That is the number in standard form.