International System of Numeration
The international system
is followed by most of the countries of the world. In this system, a number is split up into groups or periods.In the Inter-national System of Numeration, we use ones, tens, hundreds, thousands, millions and billions.
The 1st period consists of ---> ones, tens and hundred.
The 2nd period consists of ---> thousand, 10 thousand and 100 thousands.
The 3rd period consists of ---> million, 10 million and 100 million.
The 4th period consists of ---> billion, 10 billion and 100 billion.
One million is a thousand thousands.
Example : The number 50,801,592 is read as fifty million, eight hundred and one thousand, five hundred and ninety two.
| 100 B|10 B| 1 B
|| 100 M|10 M| 1 M
|| 100 Ths|10 Ths| 1 Th
|| 100 |10|1
1)Insert commas in 8643871 and write it in words.
871 --->Eight million six hundred forty-three thousand eight hundred seventy-one.
2) Insert commas in 124686 and write it in words.
686 ---->One hundred twenty four thousand six hundred eighty six.
3) Write "Ten million and seven" in numerals.
4) How many millions make a billion?
1000 millions make a billion.
5) Write 345,567 in word form
Three hundred forty five thousand and five hundred sixty-seven
6) Insert commas in 1234789
Note : Commas are used to mark thousands and millions. It comes after every three digits from the right.
The first comma marks thousands and the next comma marks millions.
• International system of numeration
• Roman Numbers
• Rounding Numbers