Class 6 Maths - ODISHA
Prime Time
The chapter 'Prime Time' in Class 6 Mathematics under the Odisha Board (BSE) introduces students to the fascinating world of numbers, specifically focusing on factors, multiples, prime numbers, and composite numbers. Students learn how to find highest common factors (HCF) and lowest common multiples (LCM) using prime factorization and division methods. This chapter is fundamental for building a strong base in arithmetic, as these concepts are heavily used in simplifying fractions and solving word problems in future board exams.
Start Learning FreeKey Concepts
Factors and Multiples
A factor is an exact divisor of a number, while a multiple is obtained by multiplying a number by an integer.
Prime and Composite Numbers
Prime numbers have only two factors (1 and themselves), whereas composite numbers have more than two factors.
Prime Factorization
The process of expressing a composite number as a product of prime numbers.
Highest Common Factor (HCF)
The greatest common divisor shared by two or more numbers.
Lowest Common Multiple (LCM)
The smallest positive number that is a multiple of two or more given numbers.
Important Formulas
Board Exam Info
In the Odisha (BSE) Class 6 mathematics examinations, this chapter typically carries around 6 to 8 marks. Common question types include finding prime factors, calculating HCF and LCM of given numbers, and solving word problems based on LCM and HCF.
Frequently Asked Questions
Is number 1 a prime number?
No, 1 is neither prime nor composite because it has only one factor (itself).
What is the only even prime number?
2 is the only even prime number; all other even numbers are composite.
How can I easily find the HCF and LCM?
You can find them easily by using the prime factorization method or the division method.
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