1. in nirnaeth arnoediad battle the book says that angband was emptied, and there came balrogs, dragons, and wolves. does anyone know how many balrogs, dragons, and wolves there were???
2. in the dagor bragollach it says thhat glaurang came, and in his train were balrogs... how many balrogs? did hey come in tens hundreds or waht???
About Balrog numbers see the thread named 'Balrogs'.
And trying to find out how many Wolfs Morgoth had is like trying to find out how many Orcs he had. The drakes which couldn't fly were probably hundreds strong in total. The Flying types that Morgoth made ready for the War of Wrath were perhaps 2-4 dozen in number.