$2).$ Use the rounding rules to round the following numbers to three significant

figures.

a$.1\mathrm{.}4859=$ d$.0\mathrm{.}07135=$

b$.1\mathrm{.}234$ x $10-3=$ e$.0\mathrm{.}9995001=$

c$.100\mathrm{.}5=$ f$.6\mathrm{.}085$ x $1015=$