Chinese numbers in Mandarin pinyin and hand gestures. This is how one could show different numbers with one's hands in Chinese culture - I used to know all of these when I was little, but have a hard time remembering past 6 now.
Japanese Multiplication Trick - This amazing multiplication Trick is often used in Japanese and Chinese Math (or so I am told). This trick allows you tomultiply two numbers quickly and accurately. Arithmetic made simple!