i have bearing that i want to use for my skates and i don't know if they will fit
Yep you sure can. Most bearings are standard size 608, and will fit on a skateboard, roller skates, and rollerblades.
Good point Brandon... and nice purple mohawk! You definitely will need more bearings.
As long as your inline hockey wheels do not require micro or 688 sized bearings then yes you will be able to use your skateboard bearings for you hockey skates. Keep in mind you are going to need 16 bearings total and a skateboard only has 8.