Answer :

7.81   7.14   7.081  7.022
look at the first number thier all a 7 so then move to the next number 8 is bigger than 1 and 0 so 7.81 is first biggest then 1 is bigger than 0 so 7.14 is second and then look at the third number and 8 is bigger so 7.081 is next and last is 7.022