Changing Base Two to Base 10

Convert 10011 in base two to a base ten number.

(a)  

Convert 111011 in base two to a base ten number.

(a)  

Convert 101010 in base two to a base ten number.

(a)  

Convert 110010 in base two to a base ten number.

(a)  

Convert 110111 in base two to a base ten number.

(a)  

Convert 1010010 in base two to a base ten number.

(a)  

Convert 11101 in base two to a base ten number.

(a)  

Convert 100101 in base two to a base ten number.

(a)  

Convert 111000 in base two to a base ten number.

(a)  

Convert 1100110 in base two to a base ten number.

(a)