Okay more hints... SKIP THIS POST IF YOU DON'T WANT ANY HELP...
1) Don't think of the dice as numbers!
2) 2/3 of the dice don't contribute to the score.
3) Draw a picture of a flower - concentrate of the main parts of the face.
4) Pay close attention when the correct score is a 0, 10, or 20.
5) Outside the tallying of scores, there is no math.
6) Once again - name of game is BIG hint.
I like this "frustrate 'em more" approach 

  I can see the responses now:
1) Well, if they're not NUMBERS, why use dice?
2) If you're keeping score, numbers HAVE to play into it.  And 2/3?  FTW?
3) If I could draw a picture of a flower, I wouldn't be so good at math.  A flower has a face?  
4) Again with the "score".  Dude, you're messing with me, it's GOTTA be about math and counting. 
5) Liar.  I can tell because your pants are ablaze.  
6) Dude, if that helped me the FIRST time, I wouldn't still be trying to figure it out!  This sucks, and you all are big fat liars who figured out the mathematical equation or algorithm this thing uses and I hate you all.  Die, die, die.  Big flaming deaths.  Your level of suckitude is beyond comprehension.  I can't believe none of you wil.......hey, I 
GOT IT! 