Comparing fractions with different denominators is simply with this simple method! Cross multiply 99 100 9 10 10 11 100 is bigger than 99. 10/11 is bigger then 9/10
Well if you find the least common multiple of the two denominators, 10 and 11, that would be 110. Now just change the fractions, 99/110 and 100/110. 100/110 > 99/110, so the answer is 10/11.