Q: How much is 230 times 10? A: The number of years humans have been calculating with decimals. A crack team of scholars in Beijing learned this last year when they solved a 23-centuries-old puzzle.

On the appearance of the first section of this important book, it is appropriate to give some account of the evolution of logarithmic tables. Logarithmetica Britannica: being a Standard Table of ...

相信大家都曾在工作、学习中接触过各种样式的图表，很多英语水平测试也会要求考生针对不同类型的表格、示意图来回答相应的问题。单词“table、diagram、graph”和“chart”都含有“图表”的意思，它们之间有哪些不同？每一类图表的用途分别是什么？本集《你 ...

PART IV. of this monumental work, the third to be published, gives the logarithms of numbers between 40,000 and 50,000. These were obtained by adding the logarithm of 0.5 to the logarithms of all the ...

James L. of Brooklyn, NY is the creator of the Division-Decimal Table, a visual teaching tool designed with math teachers and young students in mind. The device is comprised of a standard table, like ...