THESE tables aim at popularising logarithms. Like other four-figure tables they give the logarithms of numbers from 1000 to 9999. While the ordinary tables give these in one opening of two pages by ...
Young students around the world struggle to memorize multiplication tables, but the effort pays off. Cognitive scientists say that learning 6 x 7 and 8 x 9 by heart frees up the brain’s working memory ...