The times table seems like a perfect example to me of a GREAT thing to memorize. It's only 36 facts (2 through 9 times each other, knowing that ab==ba), and fro

The times table seems like a perfect example to me of a GREAT thing to memorize. It's only 36 facts (2 through 9 times each other, knowing that ab==ba), and from then on you don't have to do repeated addition.