Numbers play a crucial role in mathematics and daily life. In this chapter, we will explore number names and number sense for 7-digit and 8-digit numbers.
In the Indian numbering system, large numbers are represented using place values such as Lakhs and Crores. In the International system, they are represented using Millions.
The Indian place value system groups digits into ones, tens, hundreds, thousands, lakhs, and crores.
In the International system, large numbers are grouped as follows:
To read and write large numbers, follow these steps:
7-digit number: 25,43,678 (Twenty-five lakh forty-three thousand six hundred seventy-eight)
8-digit number: 5,34,76,891 (Five crore thirty-four lakh seventy-six thousand eight hundred ninety-one)
7-digit number: 2,543,678 (Two million five hundred forty-three thousand six hundred seventy-eight)
8-digit number: 53,476,891 (Fifty-three million four hundred seventy-six thousand eight hundred ninety-one)
To compare numbers, check the number of digits first. If they have the same number of digits, compare place values from left to right.
Numbers can be expanded according to their place values. For example:
5,34,76,891 = 5,00,00,000 + 30,00,000 + 4,00,000 + 70,000 + 6,000 + 800 + 90 + 1
Understanding large numbers, their names, and place values helps in mathematical calculations and real-life applications.