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 ...

Number lines are a great way to compare numbers. They also help you to order numbers, understand place value and estimate where a number is. Watch this video to find out more. This number line shows ...

Let's face it: Most of us don't call our own phones very often. If you're like most people, this means you probably don't know your own phone number off-hand, especially if you rarely give it out to ...