When you estimate a number you decide approximately, or roughly, how big that number is. To estimate accurately, you need to have a good understanding of the value and order of numbers. A number line ...

A secret market for ultra-rare phone numbers has turned up online RARE mobile phone numbers are being flogged online for thousands of pounds, The Sun has learned. These so-called ‘VIP’ numbers have ...

020 numbers are the area code of London and Greater London and are considered quite recognisable as a result, as it’s a highly populated city with many businesses and residences. The area code was ...

Refresh your knowledge with these guides on place value and calculations with whole numbers. Write the numbers one underneath the other, lining up the units place value digits. Start on the left to ...