Percentages in Math
The concept of percentages - from basic definitions to practical examples such as calculating percentages of quantities and making comparisons using percentages. Learn how to work with percentages efficiently and understand their application in various scenarios. Dive into the world of percentages with clear explanations and visual aids.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
06 March 2025 Percentages LO: To understand percentages. www.mathssupport.org
Understanding Percentage Percent means out of 100 The symbol for percent is % ? x % means ??? ? ??? the quantity x % of a quantity is www.mathssupport.org
Understanding Percentage 3% means 3 out of every 100 3% is called 3 per cent This is a chocolate bar made up of eight pieces. What percentage is one piece? 100 8 = 12.5% One piece of the chocolate bar will be 12.5% www.mathssupport.org
Understanding Percentage 1OO% The above slice of orange is divided into ten Parts. Find what percentage is one part. To find one part; you divide 100% by the 10 parts. 100% 10 = 10% www.mathssupport.org
Working out a percentage of an amount Example 1 Calculate 33% of 84kg write the percentage as a decimal 33 100 = 0.33 33% = multiply the decimal by the amount. 0.33 84kg = 27.72kg www.mathssupport.org
Working out a percentage of an amount Example 2 Calculate 5? write the percentage as a decimal ? % of 40 5.25 100 5? = 0.0525 ?% = 5.25% = multiply the decimal by the amount. = 0.0525 40 = 2.10 www.mathssupport.org
Making comparisons using percentages. To write one amount as a percentage of another write one as a fraction of the other Change the fraction to a decimal Multiply the decimal by 100% www.mathssupport.org
Making comparisons using percentages. Example 3 Write 660g as a percentage of 4 kg First, make sure to use the same units Change kg to grams 1 kg = 1000g 4 kg = 4000g Step 1. Write 660 as a fraction of 4000 660 4000 Change the fraction to decimal 660 4000 = 0.165 Change decimal to percentage 0.165 100% = 16.5% Step 2. Step 3. So 660g is 16.5% of 4kg www.mathssupport.org
Making comparisons using percentages. Example 4 Write 430 people as a percentage of 1600 people 430 1600 Step 1. Step 2. 430 1600 = 0.26875 Step 3. 0.26875 100% = 26. 875% = 26.9% ( to 1 d. p ) So, 430 is 26.9% of 1600 www.mathssupport.org
Thank you for using resources from A close up of a cage Description automatically generated For more resources visit our website https://www.mathssupport.org If you have a special request, drop us an email info@mathssupport.org Get 20% off in your next purchase from our website, just use this code when checkout: MSUPPORT_20 www.mathssupport.org
