Answer: For numbers like that it's easier than normal. the fraction 9/10 would be equivalent/equal to 0.9 or 90%
0.12
The one is in the tenths place
the two is in the hundredths place
and so on.
that would be 12/100 as a fraction and 12% as a percentage. Just want to say something that might make it easier, nine tenths is how you pronounce 9/10 and 0.9 so think about it that way. Hope I was helpful. :)