Thanks to my online Japanese teacher, I discovered that in a parallel to our Schoolhouse Rock series of animated shorts, Japanese children learn their multiplication tables thanks to a series of chants called 九九 (KuKu).
This has been scammed from the ever awesome Namiko Abe of About.com fame. 'Kuku is a Japanese method for memorizing multiplication tables by using a rhythmic chant. Japanese students are supposed to learn "Kuku" by heart in the second grade. For example, "two times three equals six" is said as, "Ni-san-ga-roku," which refers to "two-three-six". Just as the name implies, "Kuku" goes all the way to "ku-ku-hachijuuichi (9 x 9 = 81)". The short phrases and rhythm of the kuku make it easier to memorize. Most Japanese memorize and use them for the rest of their lives.'
You can buy your own KuKu chart, but if you go here, you can print your own. Or you can just scam a copy of this one from this here ol' blog.
Here are some examples of 九九 showcasing the 6, 7, 8 & 9 times tables:
Now you don't have any excuse for not being able to calculate sales tax! I mean you don't want this kid showing you up, do you?