Convert $2\mathrm{.}500{10}^{6}m$ into $mm.($answer is $2\mathrm{.}500{10}^{9}mm)$

The first step is to write the starting quantity, then the units for the answer which are $mm.$

Then we need the conversion factor that cancels out the units of $m,$ and leaves the units of $mm$ for the answer.

Fill in $4$ blanks.

a$.1mm$

b$.1m$

c$.1m$

d$.{10}^{-6}mm$

e$.{10}^{6}mm$

f$.{10}^{3}mm$

g$.{10}^{-3}mm$

h$.2\mathrm{.}500{10}^{12}mm$

i$.2\mathrm{.}500{10}^{15}mm$

j$.2\mathrm{.}500{10}^{3}mm$

k$.2\mathrm{.}50010mm$

I. $2\mathrm{.}500{10}^{9}mm$

m$.2\mathrm{.}500{10}^{6}m$