Finding 50% is very easy isn’t it? You will get the same answer.įinding a percentage of a quantity is an example of a commutative calculation. Commuteĭid you know that if you are struggling to mentally work out 24% of 50 you can switch the numbers round and work out 50% of 24 instead. If you need to use a calculator to check your working. To find 52% of a quantity add 50% to 2% of it.To find 2% of a quantity double 1% of it.To find 80% of a quantity subtract 20% from it.To find 90% of a quantity subtract 10% from it. To find 66⅔% of a quantity double 33⅓% of it.To find 5% of a quantity halve 10% of it.To find 20% of a quantity double 10% of it.To find 75% of a quantity add together 50% and 25% of it.Other percentages can be found by combining some of the techniques mentioned above. To find 1% of a quantity you need to divide it by 100. Find 1%:Īs 1 is one hundredth of 100, then 1% means 'one hundredth of'. To find 33⅓% of a quantity you need to divide it by three. Find 33⅓%:Īs 33⅓ is one third of 100, then 33⅓% means 'one third of'. So 25% of 20 is 5.Īnother way of finding 25% of a quantity is first finding 50% then dividing the result by 2. To find 25% of a quantity you need to divide it by four. Find 25%:Īs 25 is one quarter of 100, then 25% means 'one quarter of'. To find 10% of a quantity you need to divide it by ten. Find 10%:Īs 10 is one tenth of 100, then 10% means 'one tenth of'. To find 50% of a quantity you need to halve (or divide by two). When planning to use technology in your lesson always have a plan B!Īs 50 is half of 100, then 50% means half. It may be worth remembering that if should go offline for whatever reason, there are mirror sites at and that contain most of the resources that are available here on. The short URL, ready to be copied and pasted, is as follows:Īlternatively, if you use Google Classroom, all you have to do is click on the green icon below in order to add this activity to one of your classes. If you found this activity useful don't forget to record it in your scheme of work or learning management system. NavigateĮxercises, puzzles and Maths lesson starters grouped by topic. The topic you are studying at school at the moment perhaps. Maths MapĪre you looking for something specific? An exercise to supplement Page is an alphabetical list of free activities designed for One way toĪddress the problem is through the use of interactive activities and Traditional teaching fails to actively involve students. Learning and understanding Mathematics, at every level, requires Lesson Finishers then sign up for a subscription now: Newsletter, unlock the printable worksheets and see our Maths To the thousands of Transum resources, receive our monthly If you would like to enjoy ad-free access Have access to reports of the Transum Trophies earned by class Plans and assessment data in the Class Admin application and Subscribers can manage class lists, lesson Transum Topic pages and the facility to add to the collection The teacher with access to quality external links on each of the To the online exercises, quizzes and puzzles. Logged in to their Transum subscription on this computer.Ī Transum subscription unlocks the answers They are available in this space to teachers, tutors and parents The mathematics comes in finding out how the trick works. This spectacular magic trick never fails to amaze people of all ages assuming they can add and subtract very simple numbers. Transum breaking news is available on Twitter and if that's not enough there is also a Transum Facebook page. You can listen to the podcast while you are commuting, exercising or relaxing. The newsletter is then duplicated as a podcast which is available on the major delivery networks. Keep up the good work and thank you very muchĮach month a newsletter is published containing details of the new additions to the Transum website and a new puzzle of the month. Have particularly enjoyed KIM's game, as we have not used that for Mathematics before. We use them for all age groups and abilities. I set it as an optional piece of work for my year 11's over a weekend and one girl came up with 3 independant solutions."Ĭomment recorded on the 25 June 'Starter of the Day' page by and, : "My year 8's absolutely loved the "Separated Twins" starter. Peacock, Downe House School and Kennet School: AreĬomment recorded on the 18 September 'Starter of the Day' page by Mrs. The people who enjoy how mystifying, puzzling and hard it is. Mathematicians are not the people who find Maths easy they are
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