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Percentage Change

Practise calculating percentage increase and percentage decrease in this set of exercises.

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This is level 2: find the new amount after a percentage decrease. You can earn a trophy if you get at least 7 questions correct. You can use a calculator.

1. If 120 is decreased by 75%, what is the result? Correct Wrong

2. Lyndsay read 20 pages of her book yesterday. Today she read 40% fewer pages. How many pages did she read today?

Chef
Correct Wrong

3. Julie sent 40 emails last month. This month she sent 95% less. How many emails did she send this month? Correct Wrong

4. What number is 80% less than 120? Correct Wrong

5. Decrease 850 by 18%. Correct Wrong

6. When Two Directions released their first album, 1000 copies were downloaded in the first week. For their second album 8% fewer copies were downloaded. How many copies of their second album were downloaded? Correct Wrong

7. ChefChefs are adapting their menus and recipes to reflect the needs and desires of today's customers.

Raymond decided to order 4% less sugar for his restaurants than last year. If he ordered 700kg last year what weight of sugar should he order this year?
kg Correct Wrong

8. Mark did 65600 press ups last month. This month he will do 75% fewer press ups. How many press ups will he do this month? Correct Wrong

9. Find the new amount if 62800 is decreased by 43%. Correct Wrong

10. Find the new amount if 96500 is decreased by 94%. Correct Wrong

Check

This is Percentage Change level 2. You can also try:
Level 1 Level 3 Level 4 Level 5 Level 6 Level 7

Instructions

Try 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.

Why am I learning this?

Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician?

Comment recorded on the 2 May 'Starter of the Day' page by Angela Lowry, :

"I think these are great! So useful and handy, the children love them.
Could we have some on angles too please?"

Comment recorded on the 1 August 'Starter of the Day' page by Peter Wright, St Joseph's College:

"Love using the Starter of the Day activities to get the students into Maths mode at the beginning of a lesson. Lots of interesting discussions and questions have arisen out of the activities.
Thanks for such a great resource!"

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Learning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths page is an alphabetical list of free activities designed for students in Secondary/High school.

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Are you looking for something specific? An exercise to supplement the topic you are studying at school at the moment perhaps. Navigate using our Maths Map to find exercises, puzzles and Maths lesson starters grouped by topic.

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Description of Levels

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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/A-level 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.

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Curriculum Reference

See the National Curriculum page for links to related online activities and resources.

Example

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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