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Class 9
Exercise 4.3 Notes
Key Concepts of Exercise 4.3
This exercise is mainly based on HCF, the SLO’s for this Exercise are below.
- What is HCF?
- How do we find HCF of Numbers?
- How do we find HCF of Algebraic Expressions?
HCF (Highest Common Factor):
The abbreviation of HCF is Highest Common Factor, in simple term if we factorize two or more algebraic expressions and find out the greatest common factor among them then that expression is called HCF.
HCF of Numbers:
To find the HCF (Highest Common Factor) of two or more numbers, you can follow a straightforward method. Here’s how you can do it:
Step-by-Step Process:
- List the factors: Start by listing all the factors (numbers that divide evenly) of each number.
- For example, the factors of 12 are 1, 2, 3, 4, 6, and 12.
- The factors of 18 are 1, 2, 3, 6, 9, and 18.
- Identify common factors: Look for the factors that both numbers share. In the example above, the common factors of 12 and 18 are 1, 2, 3, and 6.
- Choose the greatest factor: The highest number among the common factors is the HCF. In this case, the greatest common factor of 12 and 18 is 6
Additional Questions Related to Class 9 Chapter 4 Exercise 4.3
