As you've begun your study of factors, you've probably realized that some numbers have a lot of factors and others only have 1 and itself. This realization leads us into our definitions of prime and composite numbers.
So, what are the definitions of prime and composite numbers? Take a look....
A prime number is a positive integer, greater than 1, whose only factors are 1 and itself.
A composite number is a positive integer, greater than 1, that has factors other than just 1 and itself
Take a look at our chart for more examples.
Notice how prime numbers only have 1 and itself as its factors? The composite numbers have at least one other set of numbers as its factors.
Most people are able to quickly identify the prime numbers up to 50. It's not a bad idea to commit this list to memory. The following are the prime numbers from 0-50.
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47
Ok.. there was a lot of vocabulary introduced in this chapter and it is all very important. Make sure that you have a clear understanding of factors, common factors, prime numbers, and composite numbers before moving on.
- Simplifying Fractions
- Comparing Fractions
- Mixed Numbers and Improper Fractions
- Adding Fractions with Like Denominators
- Adding Fractions with Unlike Denominators
- Subtracting Fractions with Like Denominators
- Subtracting Fractions with Unlike Denominators
- How to Multiply Fractions
- Multiplying Fractions by Whole Numbers
- Multiplying Mixed Numbers
Sign Up for Algebra Class E-courses
Copyright © 2009-2015 Karin Hutchinson ALL RIGHTS RESERVED