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Prime numbers | Year 6 Mathematics PDF Download

Understanding Prime Numbers

Prime numbers | Year 6 Mathematics

  • Definition of Prime Numbers: Prime numbers are unique numbers greater than 1 that have only two factors, which are themselves and 1.
  • Examples:
    • For instance, 19 is a prime number since it can only be divided evenly by 1 and 19.
    • On the other hand, 9 is not a prime number because it can be divided by 3 as well as 1 and 9.
  • Prime Numbers Below 20: The prime numbers less than 20 include 2, 3, 5, 7, 11, 13, 17, and 19.
  • Special Note: The number 1 is not considered a prime number as it only has one factor.

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FAQs on Prime numbers - Year 6 Mathematics

1. What are prime numbers?
Ans. Prime numbers are integers greater than 1 that have no positive divisors other than 1 and themselves.
2. Can 1 be considered a prime number?
Ans. No, 1 is not considered a prime number because it only has one positive divisor, which is 1 itself. Prime numbers must have exactly two positive divisors.
3. How can you determine if a number is prime?
Ans. One way to determine if a number is prime is to check if it has any divisors other than 1 and itself. If it doesn't have any other divisors, then it is a prime number.
4. Are there an infinite number of prime numbers?
Ans. Yes, there are an infinite number of prime numbers. This was first proven by the ancient Greek mathematician Euclid.
5. What is the significance of prime numbers in mathematics?
Ans. Prime numbers play a crucial role in number theory and cryptography. They are the building blocks of all other numbers and have unique properties that make them important in various mathematical applications.
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