Ratio, proportion and percentages

Introduction

The topics in this free course, Ratio, proportion and percentages, are concerned with dividing something into parts. For example, if there are 200 people living in a small village, and 50 of these are children, this could be expressed as a percentage:

 25% of the village population are children;

or as a ratio:

  one in every four people is a child or there is 1 child for every three adults;

or a proportion:

  the proportion of children in the village population is a quarter.

This OpenLearn course provides a sample of level 1 study in Mathematics [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] .