No — 9.11 is not greater than 9.9. Compare tenths: 9.11 has 0.1 while 9.9 has 0.9, and 0.9 > 0.1, so 9.9 > 9.11. (Written with two decimal places: 9.11 vs 9.90, and 9.90 − 9.11 = 0.79.)
