3,007 ; 3,13 ; 3,134 ; 3,3
Since the number before the decimal is the same, you have to see which number after the decimals is greater. For instance in your exercise, the lowest number after the decimal is 0 and that it why you put that first. Fater that you see that the number after the decimal is in both cases one : 3. 13 and and 3.134. Because of that look if one of the two numbers has any other numbers after 1. Since the second number has e four that means that it is greater. This is the logic you have to follow for all of them.