Math Questions.? Rounding #'s?

All you do is to look at the underlined number, if it's lower than 5, then remove the underlined digit and all digits right of it, if it's 5 or above, then you do the same but you also add one to the digit left to it.Example：0.7234 rounded to the tenths is 1,0.9304 rounded to the hundredths is 0.9.