Answer:
0.3, 75%,

Explanation:
We have to arrange these numbers in order of size smallest first.
The numbers are :- 0.3, 75%,

First we will convert all the numbers into decimal numbers.
0.3 = 0.3
75% =
= 0.75
= 0.8
Now we can arrange the numbers easily.
0.3, 0.75, 0.8
or 0.3, 75%,

Therefore, the numbers are already written in order of size smallest first.