Identifying prime numbers is an important topic in Year 7 math. It falls under factors, multiples, and prime numbers.
What is a Prime Number?
A prime number is a whole number greater than 1. It can only be divided by 1 and itself without leaving any leftovers.
For example, the numbers 2, 3, 5, 7, and 11 are all prime numbers.
How to Identify Prime Numbers:
Here are some simple steps to check if a number is prime:
List the factors:
For instance, let's look at the number 8.
The factors of 8 are 1, 2, 4, and 8.
Since it has more than two factors, 8 is not a prime number.
Use the Sieve of Eratosthenes:
Write down a list of numbers.
Then, cross out the multiples of each prime number as you go.
By practicing with these steps, you can get better at finding prime numbers!
Identifying prime numbers is an important topic in Year 7 math. It falls under factors, multiples, and prime numbers.
What is a Prime Number?
A prime number is a whole number greater than 1. It can only be divided by 1 and itself without leaving any leftovers.
For example, the numbers 2, 3, 5, 7, and 11 are all prime numbers.
How to Identify Prime Numbers:
Here are some simple steps to check if a number is prime:
List the factors:
For instance, let's look at the number 8.
The factors of 8 are 1, 2, 4, and 8.
Since it has more than two factors, 8 is not a prime number.
Use the Sieve of Eratosthenes:
Write down a list of numbers.
Then, cross out the multiples of each prime number as you go.
By practicing with these steps, you can get better at finding prime numbers!