[audio:http://mathoutloud.edublogs.org/files/2008/10/composite-number.mp3]
Today on math out loud we’ll focus on the word story of composite numbers, c-o-m-p-o-s-i-t-e n-u-m-b-e-r-s. The definition of composite number is a number that has more than two factors. We first started to use the word composite numbers in 1772. An example of a composite number is 8. It’s a composite number because it has four factors, 1, 2, 4, and 8. A non-example is prime numbers like 3, 5, 7, 11, 13, 17 and 19. These numbers only have 2 factors, the number itself and 1. If you don’t know what factors are, check our our other word story! We’re the math masters with the word story of composite numbers on Math Out Loud!!!!