Licensed under a Creative Commons Attribution - NonCommercial-ShareAlike 2.0 Licence - see http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ - Original copyright The Open University
From politics to cookery, ratios, proportions and percentages are part of everyday life. This unit is designed to help you become more familiar with how figures can be manipulated, then you can check whether that discount really is as big as they claim!<link rel="canonical" href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0" /> First published on Fri, 01 Aug 2008 as <a href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0">Ratio, proportion and percentages</a>. To find out more visit The Open University's <a href="http://www.open.edu/openlearn/ole-home-page">Openlearn</a> website. Creative-Commons 2008
From politics to cookery, ratios, proportions and percentages are part of everyday life. This free course, Ratio, proportion and percentages, is designed to help you become more familiar with how figures can be manipulated, then you can check whether that discount really is as big as they claim!<link rel="canonical" href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0" /> First published on Fri, 01 Aug 2008 as <a href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0">Ratio, proportion and percentages</a>. To find out more visit The Open University's <a href="http://www.open.edu/openlearn/ole-home-page">Openlearn</a> website. Creative-Commons 2008
<p>The topics in this free course, <i>Ratio, proportion and percentages</i>, 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:</p><p> 25% of the village population are children;</p><p>or as a ratio:</p><p>  one in every four people is a child <i>or</i> there is 1 child for every three adults;</p><p>or a proportion:</p><p>  the proportion of children in the village population is a quarter.</p><div class="oucontent-box oucontent-s-heavybox1 oucontent-s-box "><div class="oucontent-outer-box"><h3 class="oucontent-h3 oucontent-heading oucontent-nonumber">Enrol to get a record of achievement</h3><div class="oucontent-inner-box"><p>By enrolling on this course and setting up a free Open University account you can track your progress in My OpenLearn. When you’ve finished you can print off the free <b>activity record</b> to demonstrate your learning. </p></div></div></div><p>This OpenLearn course provides a sample of Level 1 study in <span class="oucontent-linkwithtip"><a class="oucontent-hyperlink" href="http://www.open.ac.uk/courses/find/mathematics-and-statistics">Mathematics & Statistics</a></span>.</p>
<p>This unit is from our archive and it is an adapted extract from <i>Open mathematics</i> (MU120) which is no longer in presentation. If you wish to study formally at The Open University, you may wish to explore the courses we offer in this <span class="oucontent-linkwithtip"><a class="oucontent-hyperlink" href="http://www3.open.ac.uk/study/undergraduate/mathematics-and-statistics/index.htm">subject area </a></span>.</p><p>The topics in this unit, ratios, 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:</p><p> 25% of the village population are children;</p><p>or as a ratio:</p><p>  one in every four people is a child <i>or</i> there is 1 child for every three adults;</p><p>or a proportion:</p><p>  the proportion of children in the village population is a quarter.</p><p>One difficulty that some people find with these topics is knowing when to multiply and when to divide. This module revises the relevant techniques and helps you to apply them logically.</p>
<p>This unit is from our archive and it is an adapted extract from <i>Open mathematics</i> (MU120) which is no longer in presentation. If you wish to study formally at The Open University, you may wish to explore the courses we offer in this <span class="oucontent-linkwithtip"><a class="oucontent-hyperlink" href="http://www3.open.ac.uk/study/undergraduate/mathematics-and-statistics/index.htm">curriculum area </a></span></p><p>The topics in this unit, ratios, 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:</p><p> 25% of the village population are children;</p><p>or as a ratio:</p><p>  one in every four people is a child <i>or</i> there is 1 child for every three adults;</p><p>or a proportion:</p><p>  the proportion of children in the village population is a quarter.</p><p>One difficulty that some people find with these topics is knowing when to multiply and when to divide. This module revises the relevant techniques and helps you to apply them logically.</p>
From politics to cookery, ratios, proportions and percentages are part of everyday life. This free course is designed to help you become more familiar with how figures can be manipulated, then you can check whether that discount really is as big as they claim!<link rel="canonical" href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0" /> First published on Mon, 25 Apr 2016 as <a href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0">Ratio, proportion and percentages</a>. To find out more visit The Open University's <a href="http://www.open.edu/openlearn/ole-home-page">Openlearn</a> website. Creative-Commons 2016
From politics to cookery, ratios, proportions and percentages are part of everyday life. This free course is designed to help you become more familiar with how figures can be manipulated, then you can check whether that discount really is as big as they claim!<link rel="canonical" href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0" /> First published on Fri, 01 Apr 2016 as <a href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0">Ratio, proportion and percentages</a>. To find out more visit The Open University's <a href="http://www.open.edu/openlearn/ole-home-page">Openlearn</a> website. Creative-Commons 2016
From politics to cookery, ratios, proportions and percentages are part of everyday life. This free course is designed to help you become more familiar with how figures can be manipulated, then you can check whether that discount really is as big as they claim!<link rel="canonical" href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0" /> First published on Fri, 01 Aug 2008 as <a href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0">Ratio, proportion and percentages</a>. To find out more visit The Open University's <a href="http://www.open.edu/openlearn/ole-home-page">Openlearn</a> website. Creative-Commons 2008
From politics to cookery, ratios, proportions and percentages are part of everyday life. This free course is designed to help you become more familiar with how figures can be manipulated, then you can check whether that discount really is as big as they claim!<link rel="canonical" href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0" /> First published on Fri, 22 Apr 2016 as <a href="http://www.open.edu/openlearn/science-maths-technology/mathematics-and-statistics/mathematics-education/ratio-proportion-and-percentages/content-section-0">Ratio, proportion and percentages</a>. To find out more visit The Open University's <a href="http://www.open.edu/openlearn/ole-home-page">Openlearn</a> website. Creative-Commons 2016
<p>The topics in this free course, <i>Ratio, proportion and percentages</i>, 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:</p><p> 25% of the village population are children;</p><p>or as a ratio:</p><p>  one in every four people is a child <i>or</i> there is 1 child for every three adults;</p><p>or a proportion:</p><p>  the proportion of children in the village population is a quarter.</p><p>This OpenLearn course provides a sample of level 1 study in <span class="oucontent-linkwithtip"><a class="oucontent-hyperlink" href="http://www.open.ac.uk/courses/find/mathematics?LKCAMPAIGN=ebook_&MEDIA=ou">Mathematics</a></span>.</p>