While adding up your grocery bill in the supermarket, you’re probably not thinking how important or sophisticated our number system is. But the discovery of the present system, by unknown ...

In decimal notation, it’s 3.141592653 … aaand you can run that out as far as you want, because it’s an irrational number, and it never, ever, ever ends.

For Archimedes, that value was 265/153 (which equals 1.7320 in decimal notation). Finally, our interactive increases the number of sides of the hexagon to 96 by increments of 1 rather than by the ...

For Archimedes, that value was 265/153 (which equals 1.7320 in decimal notation). Finally, our interactive increases the number of sides of the hexagon to 96 by increments of 1 rather than by the ...

In this KS2 Maths article you'll find out what a decimal number represents, by using place value headings and one hundred grids. We also have KS2 videos, a quiz and lots of examples.

Cusack has gone a step further by producing a text-book of arithmetic in which the calculations are all in terms of the decimal notation, and the various quantities dealt with, like length, area ...

Learn about and revise how to convert between fractions, decimals and percentages with this BBC Bitesize GCSE Maths Edexcel study guide.