reverse percentages: a visual approach
DESCRIPTION
GCSE Maths reverse percentages questions using a ruler and the length of shapes. I\'m trying this approach to see if I can cut out some of the verbal issues that arise in \'story problems\'TRANSCRIPT
![Page 1: Reverse Percentages: a visual approach](https://reader033.vdocument.in/reader033/viewer/2022061204/547eb231b4af9f4f378b4707/html5/thumbnails/1.jpg)
Percentages:a visual approach
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0 10 20 30 40 50 60 70 80 90 100
£200
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0 10 20 30 40 50 60 70 80 90 100
£200 ???
![Page 4: Reverse Percentages: a visual approach](https://reader033.vdocument.in/reader033/viewer/2022061204/547eb231b4af9f4f378b4707/html5/thumbnails/4.jpg)
0 10 20 30 40 50 60 70 80 90 100
£200 ???
???
![Page 5: Reverse Percentages: a visual approach](https://reader033.vdocument.in/reader033/viewer/2022061204/547eb231b4af9f4f378b4707/html5/thumbnails/5.jpg)
0 10 20 30 40 50 60 70 80 90 100
£200 ???
???
How did you work it out?
![Page 6: Reverse Percentages: a visual approach](https://reader033.vdocument.in/reader033/viewer/2022061204/547eb231b4af9f4f378b4707/html5/thumbnails/6.jpg)
0 10 20 30 40 50 60 70 80 90 100
£200 ???
???
How did you work it out?
Write down the steps in detail
![Page 7: Reverse Percentages: a visual approach](https://reader033.vdocument.in/reader033/viewer/2022061204/547eb231b4af9f4f378b4707/html5/thumbnails/7.jpg)
0 10 20 30 40 50 60 70 80 90 100
£200 ???
???
How did you work it out?
Write down the steps in detailTry the next one…
![Page 8: Reverse Percentages: a visual approach](https://reader033.vdocument.in/reader033/viewer/2022061204/547eb231b4af9f4f378b4707/html5/thumbnails/8.jpg)
The next problem…
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0 10 20 30 40 50 60 70 80 90 100
£140
![Page 10: Reverse Percentages: a visual approach](https://reader033.vdocument.in/reader033/viewer/2022061204/547eb231b4af9f4f378b4707/html5/thumbnails/10.jpg)
0 10 20 30 40 50 60 70 80 90 100
£140 ???
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0 10 20 30 40 50 60 70 80 90 100
£140 ???
???
![Page 12: Reverse Percentages: a visual approach](https://reader033.vdocument.in/reader033/viewer/2022061204/547eb231b4af9f4f378b4707/html5/thumbnails/12.jpg)
It gets better …
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0 10 20 30 40 50 60 70 80 90 100 110 120
£180
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0 10 20 30 40 50 60 70 80 90 100 110 120
£180
???
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0 10 20 30 40 50 60 70 80 90 100 110 120
£180
??? ???
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Another one…
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0 10 20 30 40 50 60 70 80 90 100 110 120
£352.50
£???
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0 10 20 30 40 50 60 70 80 90 100 110 120
£352.50
£??? £???
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There’s more…
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A laptop is marked as 10% off in a sale. The price is £540. What was the original cost of the laptop?
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0 10 20 30 40 50 60 70 80 90 100
£540
A laptop is marked as 10% off in a sale. The sale price is £540. What was the original cost of the laptop?
![Page 22: Reverse Percentages: a visual approach](https://reader033.vdocument.in/reader033/viewer/2022061204/547eb231b4af9f4f378b4707/html5/thumbnails/22.jpg)
0 10 20 30 40 50 60 70 80 90 100
£540
A laptop is marked as 10% off in a sale. The sale price is £540. What was the original cost of the laptop?
£???
![Page 23: Reverse Percentages: a visual approach](https://reader033.vdocument.in/reader033/viewer/2022061204/547eb231b4af9f4f378b4707/html5/thumbnails/23.jpg)
The last one…
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Algernon has received a 5% pay rise. His new wages are £18 275. What were Algernon’s wages before the pay rise?
0 10 20 30 40 50 60 70 80 90 100 110 120
£18 275
???