There are two mistakes in your solution. First, the bonus ball(s), i.e. the extra ball for a spare or extra two balls for a strike in the tenth frame, are only counted once. You've counted the 6 at the end twice.

Second, when a spare is scored, that frame scores exactly 10 plus the next ball. You're scoring 10 for the spare, plus the first ball, plus the next ball. For example, for 3 / 6, you counted the three twice, once by itself and once as part of the spare.

Here's how this would actually be scored, going bottom to top: 

ball score total
   5     -   146
   /    16   146
   6     6   130
   3     3   124
   X    27   121
   X    17    94
   7     7    77
   0     0    70
   4     4    70
   3     3    66
   X    20    63
   4     -    43
   /    18    43
   8     8    25
   1     1    17
   3     -    16
   /    16    16
   6     -

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In reply to Re: Re (tilly) 1: (Golf) Let's go bowling by chipmunk
in thread (Golf) Let's go bowling by virtualsue

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