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# Reverse Percentages: a visual approach

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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\'

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• This is how math should be taught at schools to improve the understandability of math for visual learners.

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• Quite well made presentation, congratulations!
http://www.bathroomsinkconsoles.net/
http://www.bathroomsinkconsoles.net/category/bathroom-sink-consoles/

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### Reverse Percentages: a visual approach

1. 1. Percentages: a visual approach
2. 2. £200 0 10 20 30 40 50 60 70 80 90 100
3. 3. £200 ??? 0 10 20 30 40 50 60 70 80 90 100
4. 4. £200 ??? ??? 0 10 20 30 40 50 60 70 80 90 100
5. 5. £200 ??? ??? How did you work it out? 0 10 20 30 40 50 60 70 80 90 100
6. 6. £200 ??? ??? How did you work it out? Write down the steps in detail 0 10 20 30 40 50 60 70 80 90 100
7. 7. £200 ??? ??? How did you work it out? Write down the steps in detail Try the next one… 0 10 20 30 40 50 60 70 80 90 100
8. 8. The next problem…
9. 9. £140 0 10 20 30 40 50 60 70 80 90 100
10. 10. £140 ??? 0 10 20 30 40 50 60 70 80 90 100
11. 11. £140 ??? ??? 0 10 20 30 40 50 60 70 80 90 100
12. 12. It gets better  …
13. 13. £180 0 10 20 30 40 50 60 70 80 90 100 110 120
14. 14. £180 ??? 0 10 20 30 40 50 60 70 80 90 100 110 120
15. 15. £180 ??? ??? 0 10 20 30 40 50 60 70 80 90 100 110 120
16. 16. Another one…
17. 17. £352.50 £??? 0 10 20 30 40 50 60 70 80 90 100 110 120
18. 18. £352.50 £??? £??? 0 10 20 30 40 50 60 70 80 90 100 110 120
19. 19. There’s more…
20. 20. A laptop is marked as 10% off in a sale. The price is £540. What was the original cost of the laptop?
21. 21. £540 A laptop is marked as 10% off in a sale. The sale price is £540. What was the original cost of the laptop? 0 10 20 30 40 50 60 70 80 90 100
22. 22. £540 A laptop is marked as 10% off in a sale. The sale price is £540. What was the original cost of the laptop? £??? 0 10 20 30 40 50 60 70 80 90 100
23. 23. The last one…
24. 24. Algernon has received a 5% pay rise. His new wages are £18 275. What were Algernon’s wages before the pay rise? £18 275 ??? 0 10 20 30 40 50 60 70 80 90 100 110 120