KASHIHARA, Nara -- A wooden tablet unearthed in 2001 from the ruins of Japan's late seventh to early eighth century capital Fujiwara-kyo here was part of a multiplication table chart used by ...

What’s seven times nine? Quick, you’ve got six seconds to answer. This June, over 600,000 children in England in year four, aged eight and nine, will be expected to answer questions like this. They ...