 Hello and welcome to the session. In this session we will learn about the International System of Numeration. First of all we will discuss large numbers under International System of Numeration. Now the greatest one digit number that is 9 plus 1 is equal to smallest two digit number that is 10. Now the greatest two digit number which is 99 plus 1 is equal to smallest three digit number which is 100. Also the greatest three digit number which is 999 plus 1 is equal to the smallest four digit number which is 1000. And the greatest four digit number which is 9999 plus 1 is equal to the smallest five digit number which is 10,000. Two digit number that is 99,999 plus 1 is equal to smallest six digit number that is 100,000 which is the International System of Numeration. The greatest six digit number which is 999,999 plus the smallest which is 1,000,000 system of Numeration. The greatest seven digit number which is 9,999,999 plus 1 is equal to smallest eight digit number which is International System of Numeration. Two of a number. The greatest place value that this one represents a number is 350. Now here 4. Now here 3. Place value face value and 43 is 4 that is does not change. Now we have of Numeration. Now periods according to the International System of Numeration are given by 1s, 1s, 10s, 1000s divided into 1000s, 10,000s divided into millions, 10 millions divided into billions, then trillions divided into trillions, then trillions, 100 trillions of Numeration. Now in the International System of Numeration starting from the right the periods are called 1s, then 1000s, millions, billions. Then we further derive the periods places as 1s, 10,000s, 100,000s, 100,000s, 10 billions under billions. Now suppose we want to write a number 20, International System of Numeration under 100s, 100,000s. We can write this number as 148, International System of Numeration starting from the right. These periods starting from the right are given spaces after every 3 periods starting from the right. Let's compare Indian and International System of Numeration. In International System of Numeration 100,000 in the Indian System of Numeration. International System of Numeration is equal to an Indian System of Numeration. Now 1 billion system of Numeration is equal to an Indian System of Numeration. Now next 10 billion international system of Numeration is equal to an Indian System of Numeration. Also 1 trillion international system of Numeration is equal to Numeration. So in this session we have learnt about International System of Numeration. And this concludes our session. Hope you all have enjoyed this session.