A number is a number until you assign some sort of unit or representation to it. 
A small collection of units and representation is provided in this app to illustrate the many ways that numbers are used everyday. 
For example:
- A number can be expressed in written form. The most common usage in the form is for writing checks. 
- A number can be represented in binary. This form is most commonly used in computer science and is the basis of what you’re looking at right now, your phone/computer/iPad, etc. 
- A number can be assigned a unit to give meaning behind that number, such as distance and time. A unit converter is used to understand the amount in terms of the unit as applied to your specific usage. 
- and more ...
Simply put, numbers are very useful, and they can also be quite interesting and fun.

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