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Reverse Percentage Worksheet

Percentage lesson 9: Find the whole from a percent · Set 844 · 40 questions
TalentJR

How to work it out (Back to 100%): Write what you know: p% is a. The whole (100%) = a × 100 ÷ p. Check: p% of your answer must give a back.

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  1. 1.5% of a number is 17. What is the number?
  2. 2.15% of a number is 9. What is the number?
  3. 3.40% of a number is 92. What is the number?
  4. 4.60 is 15% of ?
  5. 5.20% of a number is 72. What is the number?
  6. 6.16 is 40% of ?
  7. 7.Arjun spent ₹54, which is 60% of the pocket money. How much pocket money did Arjun have, in rupees?
  8. 8.30% of a number is 9. What is the number?
  9. 9.Rohan spent ₹77, which is 20% of the pocket money. How much pocket money did Rohan have, in rupees?
  10. 10.62 is 20% of ?
  11. 11.25% of a number is 1. What is the number?
  12. 12.29 is 20% of ?
  13. 13.Arjun spent ₹3, which is 25% of the pocket money. How much pocket money did Arjun have, in rupees?
  14. 14.30% of a number is 108. What is the number?
  15. 15.Arjun spent ₹30, which is 30% of the pocket money. How much pocket money did Arjun have, in rupees?
  16. 16.40 is 10% of ?
  17. 17.Meera spent ₹3, which is 20% of the pocket money. How much pocket money did Meera have, in rupees?
  18. 18.75% of a number is 18. What is the number?
  19. 19.20% of a number is 43. What is the number?
  20. 20.174 is 75% of ?
  21. 21.27 is 12% of ?
  22. 22.40% of a number is 140. What is the number?
  23. 23.60 is 20% of ?
  24. 24.Riya spent ₹15, which is 10% of the pocket money. How much pocket money did Riya have, in rupees?
  25. 25.Riya spent ₹39, which is 15% of the pocket money. How much pocket money did Riya have, in rupees?
  26. 26.15% of a number is 18. What is the number?
  27. 27.12% of a number is 24. What is the number?
  28. 28.30% of a number is 60. What is the number?
  29. 29.Aarav spent ₹18, which is 12% of the pocket money. How much pocket money did Aarav have, in rupees?
  30. 30.Arjun spent ₹9, which is 15% of the pocket money. How much pocket money did Arjun have, in rupees?
  31. 31.1 is 5% of ?
  32. 32.40% of a number is 34. What is the number?
  33. 33.25% of a number is 71. What is the number?
  34. 34.Riya spent ₹10, which is 10% of the pocket money. How much pocket money did Riya have, in rupees?
  35. 35.20% of a number is 5. What is the number?
  36. 36.Aarav spent ₹9, which is 5% of the pocket money. How much pocket money did Aarav have, in rupees?
  37. 37.2 is 5% of ?
  38. 38.Isha spent ₹39, which is 12% of the pocket money. How much pocket money did Isha have, in rupees?
  39. 39.5% of a number is 9. What is the number?
  40. 40.Kabir spent ₹17, which is 10% of the pocket money. How much pocket money did Kabir have, in rupees?

Answer key

  1. 340
  2. 60
  3. 230
  4. 400
  5. 360
  6. 40
  7. 90
  8. 30
  9. 385
  10. 310
  11. 4
  12. 145
  13. 12
  14. 360
  15. 100
  16. 400
  17. 15
  18. 24
  19. 215
  20. 232
  21. 225
  22. 350
  23. 300
  24. 150
  25. 260
  26. 120
  27. 200
  28. 200
  29. 150
  30. 60
  31. 20
  32. 85
  33. 284
  34. 100
  35. 25
  36. 180
  37. 40
  38. 325
  39. 180
  40. 170

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