First off i'm new so dont shoot me.

I trade on Bittrex and Binance. While Bittrex fee's are in btc why does binance charge a percent of the coin you want?
So if i want say 10 coins of BQX (Ethos) then technically i have to order 11 cause they charged me a fee of 0.011..... BQX

So now i have like 10.9xxx I can't trade the .9xxx so cause it only lets you trade in whole digits... Now wallet will sit with
fraction of coins that i already traded.

What do you guys do with the fraction of a coin on Binance??

Thanks,