Which one is smallest 11.1 1.01 1.1 10.1 10.11?

To determine the smallest number among the options given, we must compare the numbers based on their decimal values. In this case, the smallest number is 1.01 because it has the smallest decimal value compared to the other numbers. The numbers 1.1 and 11.1 are larger than 1.01, while 10.1 and 10.11 are also larger due to their whole number values.