The International number system is the system which is followed by most of the countries of the world. We use decimal number system in our everyday math calculations. In decimal number system there are 10 digits from 0 to 9. All our numbers are made using these 10 digits only. In International number system, a number is split up into groups or periods.We use ones, tens, hundreds, thousands, millions and billions. The 1st period consists of ---> ones, tens and hundred.
