There are 2 systems of numeration :
1) Hindu-Arabic Number system (Indian System of numeration)
2) International Number System

What are period ?
To make large numbers easier to read and write, the digits are seperated into groups called periods. It is denoted by commas (,) .
1. Indian systems of numeration has four periods - Ones, Thousands , Lakhs , and Crores
2. Pattern of periods is 3-2-2-2 and starts from Right To Left.

Place of digits in Indian system of numerations are
Ones, Tens , Hundreds, Thousands , Ten Thousands , Lakhs , Ten Lakhs, Crores , Ten Crores


Q1.  Write the number with periods of following indian number systems names.

a)  Ten Lakh Ten Thousand and One Hundred
 

b)   Eight Lakh Five Thousand Two Hundred and Two
 

c)   Fifty Five Lakh Five Hundred and Fifty Five
 

d)   Sixty Six Lakh and Sixty Six
 

e)   Fifty Five Lakh Five Hundred and Five
 

Check Your Answer

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