Help me solve this question by using 1's complement

Question

(i) 110(Base2) - 010(Base2)
(ii) 1010(Base2) - 1000(Base2)

Help me solve this question convert The Value -40 and 52 to 8-Bit digit in form of:

(i) Sign and Magnitude
(ii) 1's Complement
(iii) 2's Complement