# NCERT Class 6 Solutions: Knowing Your Numbers (Chapter 1) Exercise 1.1 – Part 4

Q-4 Insert commas suitable and write the names according to international system of numeration:

1. 78921092

2. 7452283

3. 99985102

4. 48049831

Solution:

The following table shows how the numerals are named in International systems.

 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

Here is an example: 42,342,783 will be called

Or Fourty two million, three hundred and fourty two thousand, seven hundred and eighty three.

1. 78921092

2. 7452283

3. 99985102

International System of numeration

4. 48049831

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