1112+Base+10+and+Place+Value

=The Base-10 Number System and Place Value=

We use a base-10 number system because humans have 10 fingers and 10 toes. This means that every place in a number is worth 10 times more than the place to its right, and that we use 10 digits (0,1,2,3,4,5,6,7,8, and 9).

What if we were born with 12 fingers? media type="custom" key="10462004"