When we are asked to do a calculation for either addition, subtraction, multiplication or division, we will often decide whether to carry out the calculation ‘mentally’ or to use a ‘formal’ written ...

Watch the video to see some examples of how you can open a conversation and ask your colleagues for suggestions and ideas. Speaker: Not all numbers are whole numbers. Decimals are numbers that are ...

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 ...