International Numbering System

In International numbering system also, we form different periods to read the large numbers easily. Here we use periods like ones, thousand and millions etc.

Suppose, let us understand the International system by using number 1: ones (1), tens (10), hundreds (100), one thousands (1000), ten thousands (10000), hundred thousands (100,000), one millions (1,000,000), ten millions (10,000,000), hundred millions (100,000,000), etc. Here we place the numbers according to their place value.

In International system also, we put a comma (,) after each periods to differentiate the periods.

Some examples will help us to write the International numbering system in figures and in words.

1. Write the following in figures in the international system:

(i) Five thousand 

(ii) Fifty thousand

(iii) Five hundred thousand

(iv) Five million

(v) Fifty million   

(vi) Five hundred million    

Solution:

(i) 5,000  

(ii) 50,000

(iii) 500,000 

(iv) 5,000,000

(v) 50,000,000 

(vi) 500,000,000

Note:

• The first period, called ones period, is formed with the first 3 digits of the number.

• The second period, called thousands period, is formed with the next 3 digits of the number.

• The third period, called millions period, is formed with the digits after thousands.


2. Write the following in figures in the International system:

(i) five thousand, two hundred and twenty

(ii) Twenty-two thousand, five hundred and eleven

(iii) Three hundred and twenty-five thousand, four hundred and two

(iv) Four million, one hundred and thirty-two thousand, three hundred and sixteen

(v) Twenty-five million, two hundred and twelve thousand, four hundred and twenty-three

(vi) Three hundred and fifteen million, one hundred and twenty-one thousand, eight hundred and ten

Solution:

(i) 5,220  

(ii)  22,511

(iii)  325,402 

(iv)  4,132,316

(v) 25,212,423 

(vi)  315,121,810

Note:

In the international numbering system, we write millions after thousands while in the Indian system, we write lakhs after thousands.





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