No.
A half is bigger than a third.
1 and a half is bigger
yes 5 eights is bigger than i half .
12 is bigger than 1/2.
yes
If you mean 10/12 then it is bigger than 1/2
No.
Yes, 3 cm is bigger than 1 inch. It will be a little less then half a cm bigger.
A half is bigger than a quarter.
Yes
One half is bigger than two fifths because two fifths just before 2.5 fifths which is half.
2/6 is the same as 1/3, which is less than half. So, yes 1/2 is bigger than 2/6.