MATH: Divisibility Rules, Prime and Composite Numbers, and Prime Factorization
Today, we reviewed the Divisibility Rules that you probably remember from last year:
We also reviewed Prime and Composite Numbers:
*Prime Numbers are whole numbers that only have two factors, 1 and itself. (examples, 2, 7, 13)
2 is the lowest prime number.
*Composite Numbers are whole numbers that have more than two factors.
*The number 1 is not prime or composite. Neither is 0.
Then, we took a look at Prime Factorization. Prime Factorization is when we write numbers as the product of prime numbers.
Here are a few examples from class:
Finally, this is a video from the Khan Academy that explains prime factorization and gives you more examples: