Unfortunately, neither of your answers are correct. It may be helpful to return to the definitions of the terms involved here. What does "one hundredth" really mean? Well, it means 1/100. What, then, does "twenty hundredths" mean? Can you convert 1/100 to a decimal? What do you get? What do you get when you translate the fraction you got from "twenty hundredths" into a decimal? Do you see now why your answer is incorrect?
For the second question, you (should) know that the first digit after the decimal point is the tenths position, the second digit is the hundredths, and the third is the... what? It may help to note that 9.1274 can be written as \(\displaystyle \dfrac{9}{1} + \dfrac{1}{10} + \dfrac{2}{100} + \dfrac{7}{1000} + \dfrac{4}{10000}\). Can you see why this is the case? How does this relate to the question at hand? How does it help you discover which number is in the thousandths place?