In the past, experts developed calculating machines that worked with three digits, a ternary system, that they hoped would ...

A KS2 Maths article for Year 5 on how to multiply decimals by 10, 100 and 1000 using a place value chart.

Rounded values When rounding decimals apply the same mathematical rules used when rounding whole numbers. It is not always possible to give an exact value. When it’s not possible, numbers can be ...