To order these in small to large you can see that 3/4 will be the smallest because 3 is less than 4 so you have less than a whole number
8/8 will be next as this is the equivalent of 1
11/6 will be the largest because 11 is more than 6 which makes this more than a whole
So the order is
3/4. 8/8. 11/6