ClassBrain Math » ratios http://www.classbrainmath.com A ClassBrain site for Mathematics Tue, 19 Oct 2010 04:44:51 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 What Are Percentages? http://www.classbrainmath.com/2010/03/percents/ http://www.classbrainmath.com/2010/03/percents/#comments Fri, 12 Mar 2010 07:58:24 +0000 admin http://www.classbrainmath.com/?p=374
Contents
  1. What Are Percentages?

What Are Percentages?


A percentage is a special ratio in which the second term of the ratio is always 100. By expressing a number as a percentage you are reflecting how many times it occurs in relation to 100 times. As an example: 3/4 is expressed as 75/100 or 75%. In other words, there would be 75 out of 100 occurrences, people, places, etc.

This video is brought to you by Brightstorm, where you can see over 2,000 free math videos. See more Pre-Algebra videos at Brightstorm.

]]> http://www.classbrainmath.com/2010/03/percents/feed/ 0 What Are Ratios and Proportions? http://www.classbrainmath.com/2010/03/ratios-and-proportions/ http://www.classbrainmath.com/2010/03/ratios-and-proportions/#comments Fri, 12 Mar 2010 07:20:05 +0000 admin http://www.classbrainmath.com/?p=371

Learning to work with ratios and proportions is one of the most useful things you can learn to do. Mastering ratios and proportions will help you figure out everything from the amount of paint you need to paint your room to the amount of tax you will owe on a TV.

This video is brought to you by Brightstorm, where you can see over 2,000 free math videos. See more Pre-Alegra videos at Brightstorm.

]]> http://www.classbrainmath.com/2010/03/ratios-and-proportions/feed/ 0