0.731 is greater than 0.73 because number one is at the end which makes it greater. And look at it this way/ example: 7.401 or 7.041 which is 7.401 is greater than 7.041 because 7.041 stops at a Zero so u have to choose between those numbers and it would be 7.401 It is greater and it has a zero kind of like at the end~ ! hope dis helped!!! :) 0.73 is greater!