Order from greatest to least 9.129 9.37 9.3 9.219 explain how you got your answer

9.37, 9.3, 9.219, 9.129 < that's your answer 
I got this answer because you have some with 3 decimal points so you have to put the other ones in 3 decimal points all you have to do is add zeros so really this is what they look like
9.370, 9.300, 9.219, 9.129 It doesn't matter how many decimal points there are it matters what the first number before the decimal point and the first number after the decimal point.