I am amusing you mean 0.4 in which case no. If you mean 04 then yes.04=4 1 half=0.5
your question answers itself "Is seven and a half greater than a half" One is fifteen times greater than the other.
No : 4 over 8 equals one half and so is not greater. It is less than 1 .
Yes
3/4
No it is not. 2/3 is greater than 1/2.
1 and 1/4
1/4
No.
1/14
yes, it is clear that 3/4 is greater than 1/2
Yes 3/4 is greater than a 1/2