Answer:
See below
Explanation:
If you can't tell just by looking at them, you will need to convert them all to fractions of a common denominator .....in this case (the smallest) common denominator would be 18
1/2 = 9/18
1/3 = 6/18
1/6 = 3/18
4/9 = 8/ 18 so now you can see least to greatest is
1/6 1/3 1/2 4/9