159000

When I was doing this, I knew that I had to start with largest multiple of 5 because multiples of 5 can only end in a 5 or a 0. Then, I did the smallest odd number because for that I knew that I should probably use my smallest digits because I needed the larger numbers for some of the other questions. After that, I did the number closest to 50 because I still had the 4 left, so I put that in the tens place because 40 is close to 50, and I put a number in the ones place as well. Finally, I did The Biggest Odd Number and The Biggest Even Number since they were the last two left, so I put my two smallest odd and even number in the ones place because I knew that I needed the bigger numbers for the tens place, and then I put the two other number in the tens place.