.222, 1/5, .02
Write them in decimal form
.222, .20, .02
Look at the tenths place, since the third one has a zero which is less than 2 so .02 would go first.
Then look at the first two, since the tenth place is the same, we look at the hundredths place since 0 is less than 2, .2 goes before .222.
The order would be
.02, 1/5, .222