Casting out nines

Posted by R. Berg on July 04, 2009 at 16:25

In Reply to: Casting out nines posted by Susan Durisoe on July 03, 2009 at 20:30:

: My mother just asked me a question I couldn't answer. What does the phrase "casting out nines" mean?

Casting out nines is a way of checking your arithmetic.

Link below: en.wikipedia.org/ wiki/Casting_out_nines

• Casting . . .