Table of Contents
- Natural Numbers Definition
– Largest Natural Number
- Successor and Predecessor
- Summary
- What’s Next?
In the first segment of the chapter Whole numbers, we will learn about the basic type of numbers, known as Natural numbers.
What are Natural numbers?
Natural numbers are the numbers which are used to count something. They are called so because they come naturally to us when we are counting, hence they are also known as Counting numbers.
Natural numbers start from number 1 and go on and on. We count them as 1, 2, 3, 4, 5, 6, 7,
….
What is the largest natural number?
There is no largest natural number. To understand this, let us take a few examples:
Can we count the number of students in a class?
Yes, we can.
Can we count the numbers of students in a school?
Yes. We just need to count the number of students in each class and add them. The total number of students in the school will be greater than the number of students in a class.
Can we count the number of people in a city?
Although a lot of extra help will be needed, it is possible to count the number of people in the city. The number of people in the city will be greater than the number of students in a school.
Can we count the number of people in a country? Or the number of people on the planet? Or the number of people in the next 10 years?
As we try to count these numbers, they keep on increasing. Thus we can conclude that there is no largest natural number.
What are Successor and Predecessor numbers?
Whenever 1 is added to any number, the new number is called the Successor of that number.
Whenever 1 is subtracted from any number, the new number is called the Predecessor of that number.
For example, there are 7 people standing in a line.
When one more person joins the line, the total number of people becomes 8. Here, 1 is added to 7 and we get 8. So, 8 is the successor of 7.
If one person leaves the line, there are 6 people remaining. Here, 1 is subtracted from 7 to get
6. Thus, 6 is the predecessor of 7.
Here are a few examples of successor and predecessor numbers
Number |
Successor |
Predecessor |
18 |
19 |
17 |
85 |
86 |
84 |
562 |
563 |
561 |
10,381 |
10,382 |
10,380 |
3,33,462 |
3,33,463 |
3,33,461 |
78,93,425 |
78,93,426 |
78,93,424 |
Summary
Natural Numbers |
The numbers that are used to count something 1, 2, 3, 4, 5, 6, 7… and so on |
Successor Number |
The number we get on adding 1 to a number |
Predecessor Number
The number we get on subtracting 1 from a number
What’s next?
In our next segment of Class 6 Maths, we will learn about Whole numbers and how to represent them on the number line.