one quarter is 1/4 (one divided by four)
1/4 = 0.25
0.076923
that is a decimal
0.75
0.175
You don't. You learn to spell, instead!
It is 0.09
1/5
It is simply -81.0 as decimal
3/5 = 0.6
It is -7.5 as a decimal
Fractions in decimal form are easy to compare and to add and subtract from one another.
12.6% as a decimal would be .126.