NCERT Book Class 3 Mathematics (Maths Mela) Chapter 3 Double Century

3 Double Century
The Story of Our Numbers
Tens of thousands of years ago, people started counting. They wanted to
keep records of their things. So, they made marks on the walls of caves
and on the barks of trees.
Over time, they kept records of their things by making groups of 5, 10,
20, and 60.
Thousands of years ago, the ancient Indians created a method for
writing any number, however large, using only ten symbols: 0, 1, 2, 3,
4, 5, 6, 7, 8, 9. It was one of the most ingenious and creative inventions
in human history. It made possible the invention of TVs, computers,
mobile phones, and more. This method of writing numbers is now used
everywhere in the world.
A very important part of this invention was the introduction and use
of the symbol ‘0’ to mean ‘nothing’ or absence of something. It is the
number 0 that really made this system of writing numerals work!
Over the next few months, we will learn how to write all numbers, however
large, using just these ten symbols.

Let us Do
1. Look at the picture. Estimate
and write the number of each
of the following objects.
(a) Oranges : ................
(b) Bangles : ................
(c) Laddoos : ................
(d) Barfi : ................
(e) Bindis : ................
(f ) Bananas : ................

Chapter 3.indd 16 2/24/2025 12:01:31 PM