$1.$ Convert $757\mathrm{.}2510$ to hexadecimal.

$2.$ Convert $111010110001\mathrm{.}0112$ to octal

$3.$ Convert to base $6$: $3$BA$\mathrm{.}2514($do all of the arithmetic in decimal$)$

$4.$ Subtract in binary. Place $1$ over each column from which it was necessary to borrow.

$111101001000111.$

$5.$ Convert $375\mathrm{.}548$ to base $3$

$6.$ Convert the following decimal number to binary:

$2983636$

$7.$ Multiply in binary: $1111$ and $1001.$

$8.$ Add in binary: $1111$ and $1001$

$9.$ Divide in binary: $11101001-$: $101$