Number System | CBSE Class 9 Maths | Chapter 1 🔔 SUBSCRIBE or You'll miss out:
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Hello students, here we are going to study the first chapter of class 9 mathematics as, Number System.
Let's do this.
As for understanding this chapter, we need to know all about the number system,
- What is Number system?
- What are the types of numbers?
- Example questions to understand these number types?
What is a Number System?
The collection of numbers is called the Number system.
A number system is a system of writing for expressing numbers. It is the mathematical notation for representing numbers of a given set by using digits or other symbols in a consistent manner.
It provides a unique representation of every number and represents the arithmetic and algebraic structure of the figures.
It also allows us to operate arithmetic operations like addition, subtraction, and division.
The different number of systems are mentioned below.
Decimal number system
Binary number system
Octal number system
Hexadecimal number system
Decimal Number System:
Decimal number system has base 10 because it uses ten digits from 0 to 9.
In the decimal number system, the positions successive to the left of the decimal point represent units, tens, hundreds, thousands and so on.
Irrational Numbers
A number is called an irrational number if it can’t be represented in a p/q form, where p and q are integers.
Real Numbers
The collection of all rational and irrational numbers is called real numbers. Real numbers are denoted by R.
All the above-mentioned topics are described in an interactive and efficient manner so that the students could easily understand them.
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