Class 6 Maths - HARYANA
Prime Time
The chapter 'Prime Time' in Class 6 Mathematics for Haryana (BSEH) introduces students to the fascinating world of numbers by exploring factors, multiples, prime numbers, and composite numbers. Students learn how to find factors and multiples of given numbers and understand the unique properties of prime and composite numbers. This chapter builds a strong foundation for advanced arithmetic, fractions, and algebra in higher classes. It is very important for board exams as it forms the basis for finding Highest Common Factor (HCF) and Least Common Multiple (LCM), which frequently appear in both objective and subjective exam questions.
Start Learning FreeKey Concepts
Factors
A factor of a number is an exact divisor of that number which divides it without leaving any remainder.
Multiples
A multiple of a number is obtained by multiplying it by any natural number, and there are infinite multiples for any given number.
Prime Numbers
Numbers greater than 1 that have only two factors: 1 and the number itself, such as 2, 3, 5, and 7.
Composite Numbers
Numbers having more than two factors are called composite numbers, for example, 4, 6, 8, and 9.
Co-prime Numbers
Two numbers are said to be co-prime if they do not have any common factor other than 1.
Important Formulas
Board Exam Info
In the Haryana (BSEH) Class 6 Mathematics examinations, this chapter typically carries around 4 to 6 marks. Common question types include listing all factors of a number, writing the first few multiples, identifying prime and composite numbers from a given set, and checking divisibility rules.
Frequently Asked Questions
Is 1 a prime number?
No, 1 is neither prime nor composite because it has only one factor (itself).
What is the difference between a factor and a multiple?
A factor is an exact divisor of a number and is always less than or equal to the number, whereas a multiple is the product of a number and a counting number, and is always greater than or equal to the number.
Why is 2 called a special prime number?
2 is the only even prime number; all other even numbers are composite because they can be divided by 2.
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