decimal numeration system
decimal number system
decimal system

I didn't know the Chinese even used the decimal system!

For example, the most common base used today is the decimal system.

True, the decimal system has a similar situation in regard to powers of 10.

The books have been classified in the library according to the decimal system.

Can you see why they do not work out to fit exactly into the decimal system?

Ten is the basis for the decimal system; it's a decade.

Now here is the good part: "The decimal system will go into general use.

For numbers larger than 9, a decimal system is used.

Therefore, at least since 629 the decimal system is definitely known to the Indian scientists.

She introduced the decimal system to France in the 17th century.