Share 'HELP WITH MATH NEEDED URGENTLY!'

I'm a teacher, but have always had trouble setting up gradebooks. Never learned how. Anyway, this is the current problem. Students have 10 assignments, each worth 100 pts, for a possible total of 1000. BUT, and here is where I have trouble. Those 1000 points are to equal 50 pts that go in the gradebook. So if they get everything right, they get a 50. If they get half right, (500 pts) they get a…