Percentage ChangePractise calculating percentage increase and percentage decrease in this set of exercises. 
This is level 7: challenging questions. You can earn a trophy if you get at least 7 questions correct. You can use a calculator.
Give nonexact answers to three significant figures.
InstructionsTry your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file. 




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Simple Percentages  A good place to start.
Level 1  Find the new amount after a percentage increase.
Level 2  Find the new amount after a percentage decrease.
Level 3  Find the percentage increase given the original and final values.
Level 4  Find the percentage decrease given the original and final values.
Level 5  Find the original amount after a percentage increase or decrease given the final value.
Level 6  Mixed questions.
Level 7  Challenging questions.
Switch  Practise percentage increase and decrease calculations by completing this table.
Exam Style questions are in the style of GCSE or IB/Alevel exam paper questions and worked solutions are available for Transum subscribers.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
See the National Curriculum page for links to related online activities and resources.
You may want to use a calculator for some of the questions. See Calculator Workout skill 3.
Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
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