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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 1: find the new amount after a percentage increase. You can earn a trophy if you get at least 7 questions correct. You can use a calculator.

1. If 20 is increased by 30%, what is the result? Correct Wrong

2. Shona ate 120 grapes yesterday. Today she eats 60% more than yesterday. How many grapes did she eat today?Grapes Correct Wrong

3. John took 80 photographs last month. This month he took 20% more. How many photographs did he take this month?

Camera
Correct Wrong

4. What number is 45% more than 180? Correct Wrong

5. Increase 750 by 22%. Correct Wrong

6. Last time Orange Floyd released an album, 400 copies were downloaded in the first 24 hours. By the end of the first week fans had downloaded 16% more copies. How many albums had been downloaded in total at the end of the first week?

Guitars
Correct Wrong

7. Jamie decided to order 2% more flour for his restaurants than last year. If he ordered 600kg last year what weight of flour should he order this year? kg Correct Wrong

8. Judith swam 23600 metres last month. Her target for this month is to swim 95% more metres than last month. How many metres must she swim this month to achieve her target?

Swimmer
m Correct Wrong

9. Find the new amount if 27100 is increased by 81%. Correct Wrong

10. Find the new amount if 92800 is increased by 73%. Correct Wrong

Check

This is Percentage Change level 1. You can also try:
Level 2 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.

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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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