Arrange the numbers in ascending order:
-1, -11 , 111 , -111 , 11 , 0 , 1
-111 , -11 , -1 , 0 , 1 , 11 , 111
When considering negative numbers, the bigger the number, smaller is its value.
So, -111 is less than -11.
Similarly, -11 is less than -1.
Hence, among the given numbers, -111 is the smallest and 111 is the biggest number.
Ascending order of numbers is the arranging of numbers from smallest to largest. So, the given numbers in ascending order can be written as: -111, -11, -1, 0, 1, 11, 111