Factorization Flashcards
This will explain how to factorize;
Understand what a factor is before you start to work with prime numbers. Let’s take the number 20.
Let’s factor 20:
2 x 2 x 5
2 and 5 are the prime factors for 20.
This means that 20 is not a prime number.
Factors are the numbers multiplied to get the product.
We can also find more factors of 20:
5 x 4 and 2 x 10.
All the factors of 20 are: 1, 2, 4, 5, 10.
One more. Is 9 a prime number?
Let’s factor 9:
3 x 3
Factors of 9 are 1, 3 and 9.
9 is not a prime number.
What are factors?
Factors are numbers that divide exactly into another number
What are prime factors?
A factor that is a prime number: one of the prime numbers that, when multiplied, give the original number.
An example of a prime factor?
The prime factors of 15 are 3 and 5 (3×5=15, and 3 and 5 are prime numbers).