I'm going to do a short answer so here:
a) 0.9
b) 0.4
c) 0.7
d) 0.8
e) 0.39
f) 1.6
g) 5.5
h) 12.4
All of these can be solved by doing this (example_:
2.7/3=
(27/3)/10
(9)/10= 0.9
essentially, just recognize that they are similar to their whole number counterparts.
4. $9.75*13.5= ~131.63 (technically 131.625, but that doesn't exist in monetary values)