311
131
To compare multi-digit numbers, we first start with the left-most digit.
• The hundreds digit (3rd digit from right to left) is "3" of the first number.
,• The hundreds digit is "1" of the second number.
We know 3 > 1, thus we can conclude that the number starting with "3" is larger than the number starting with "1".
So,
311 > 131