**This song is available on Harry Guffee's ****Got Math?**
Soul music meets rhythm and blues in this expository narrative about the relationship between decimals, fractions, and percents.
**Ladies and Gentlemen:**
The numbers that fall in between consecutive whole numbers include
Positive Rational Numbers
**Positive Rational Numbers can be written in any of three forms, any of three notations;**
As fractions
As decimals
As percents
Each form has its own special characteristics
The forms are interchangeable, but the ways of doing standard operations
With the three notations are very different
**Got Math?**
**Fractions are used to name part of a whole object**
Or part of a whole collection of objects
Or to compare two quantities
A fraction is a number in the form a/b
Where a and b are whole numbers and b is not zero
**A decimal is a name for a fraction whose denominator is a power of 10 **
For example: 1/100 = 0.01, 1/1000 = 0.001
So a fraction with a multiple of ten in the denominator can also be written
As an equivalent decimal number
And, because a fraction can also represent division
That is to say that the fraction 2/3 can be thought of as 2 divided by 3
So that when you divide a numerator by a denominator,
You can express that fraction as a decimal equivalent
**A percent is a fraction with 100 in the denominator**
The word percent comes from the Latin words "per centum":
"Per" meaning for and "centum" meaning one hundred;
Ergo, 60 percent means 60 out of one hundred
A percent always represents a percent of something
And that something is the whole thing, or 100%!
**See more of our ****Math Songs**
*Many thanks to Harry Guffee for permission to publish these lyrics.*
© 2002 Pine Mountain Music. All rights reserved. Printed with permission. |