Steps of your solution must be shown.

$1\mathrm{.}9$ Convert the following binary numbers to decimal numbers:

a$.1010$

b$.1000000$

c$.11001100$

d$.11111$

e$.10111011001$

$1\mathrm{.}14$ Convert the following decimal numbers to binary numbers using the divide$-$by$-2$ method:

a$.9$

b$.15$

c$.32$

d$.140$

$1\mathrm{.}18$ Convert the following binary numbers to hexadecimal:

a$.11110000$

b$.11111111$

c$.01011010$

d$.1001101101101$

$1\mathrm{.}21$ Convert the following hexadecimal numbers to binary:

a$.FF$

b$.$ FOA$2$

c$.0F100$

d$.100$