It derives from an ancient Arabic source, itself based on counting on fingers/thumbs and is the international norm. In ancient times, the Babylonians used base 60, but, successful though it was, the decimal system is less cumbersome.
They use a base 10 system
It is the number system that we use today, 0,1,2,3,4,5,6,7,8,9 , if that helps.
The US system that is based on the number 10 is the base 10 system. In the base 10 system the numbers roll over every 10; example 10,20,30.
10
The decimal number system uses 10 different symbols to represent a number. The 10 different symbols are 0 to 9. It is a base 10 system unlike binary which is base 2 ( 0 and 1).
10 is so important because we use a base-10 counting system.
The base of our number system is 10. However there are mathematical methods of converting bases to 2 , 5 ...e.t.c.
Because base-10 is the most common system. Humans have 10 fingers, therefore, it is most natural to use a base-10 system.
It is the number system that we now use today and it is the Hindu-Arabic numeral system.
The base 10 system.
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