# NCERT Class 6 Solutions: Knowing Your Numbers (Chapter 1) Exercise 1.1 – Part 2

Q-2 Place commas correctly and write the numerals:

1. Seventy–three lakh seventy–five thousand three hundred seven.

2. Nine crore five lakh forty–one.

3. Seven crore fifty–two lakh twenty–one thousand three hundred two.

4. Fifty–eight million four hundred twenty–three thousand two hundred two.

5. Twenty–three lakh thirty thousand ten.

Solution:

Refer the following table to understand the how commas are placed in the Indian system English system of numbering. After 1000 a comma is placed every 2 digits in Indian system; in English system a comma is placed every 3 digits.

 Hindi Indian figure Powernotation International figure International Names one 1 100 1 One ten 10 101 10 Ten one hundred 100 102 100 One hundred one thousand 1,000 103 1,000 One thousand ten thousand 10,000 104 10,000 Ten thousand one lakh (also lac) 1,00,000 105 100,000 One hundred thousand ten lakh 10,00,000 106 1,000,000 One million one crore 1,00,00,000 107 10,000,000 Ten million ten crore 10,00,00,000 108 100,000,000 One hundred million one arab or one hundred crore 1,00,00,00,000 109 1,000,000,000 One billion ten arab 10,00,00,00,000 1010 10,000,000,000 Ten billion one kharab 1,00,00,00,00,000 1011 100,000,000,000 One hundred billion ten kharab 10,00,00,00,00,000 1012 1,000,000,000,000 One trillion one neel 1,00,00,00,00,00,000 1013 10,000,000,000,000 Ten trillion ten neel 10,00,00,00,00,00,000 1014 100,000,000,000,000 One hundred trillion one padm 1,00,00,00,00,00,00,000 1015 1,000,000,000,000,000 One quadrillion ten padm 10,00,00,00,00,00,00,000 1016 10,000,000,000,000,000 Ten quadrillion one shankh 1,00,00,00,00,00,00,00,000 1017 100,000,000,000,000,000 One hundred quadrillion ten shankh 10,00,00,00,00,00,00,00,000 1018 1,000,000,000,000,000,000 One quintillion
1. Seventy–three lakh seventy–five thousand three hundred seven.

2. Nine crore five lakh forty–one.

3. Seven crore fifty–two lakh twenty–one thousand three hundred two

4. Fifty–eight million four hundred twenty–three thousand two hundred two

5. Twenty–three lakh thirty thousand ten.

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