>>That's the way we do it here too, but then I'm a math person - and do those "Cross Sums" puzzles daily. The MB sums are neat little puzzles to solve :)
>
>I would agree that the MB sums are easier to use, especially when you've got 'em memorized. But they aren't very readable to someone who doesn't work that way.

OTOH, we get a lot of contractors that are very bad at English, but usually very good with numbers...