Math Problems: Subtracting decimals...I can't figure this out. I was tried my best...

[Diva1675]

...to help my daughter.? Write the missing digits.

4.__ - __.6 = 2.7

3__.5 - __2.8 = 18.7

1_.3 - 8.__ = 6.4

__9.2 - __.4 = 11.8