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Reverse Percentage Worksheet

Percentage lesson 9: Find the whole from a percent · Set 374 · 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. 1.10% of a number is 30. What is the number?
  2. 2.122 is 50% of ?
  3. 3.5% of a number is 3. What is the number?
  4. 4.Anaya spent ₹14, which is 10% of the pocket money. How much pocket money did Anaya have, in rupees?
  5. 5.Anaya spent ₹18, which is 5% of the pocket money. How much pocket money did Anaya have, in rupees?
  6. 6.80% of a number is 192. What is the number?
  7. 7.25% of a number is 34. What is the number?
  8. 8.20% of a number is 74. What is the number?
  9. 9.7 is 5% of ?
  10. 10.36 is 12% of ?
  11. 11.Kabir spent ₹112, which is 40% of the pocket money. How much pocket money did Kabir have, in rupees?
  12. 12.60 is 60% of ?
  13. 13.21 is 15% of ?
  14. 14.Dev spent ₹71, which is 25% of the pocket money. How much pocket money did Dev have, in rupees?
  15. 15.6 is 30% of ?
  16. 16.Arjun spent ₹189, which is 75% of the pocket money. How much pocket money did Arjun have, in rupees?
  17. 17.10% of a number is 37. What is the number?
  18. 18.12% of a number is 45. What is the number?
  19. 19.Diya spent ₹1, which is 5% of the pocket money. How much pocket money did Diya have, in rupees?
  20. 20.50% of a number is 162. What is the number?
  21. 21.Ishaan spent ₹12, which is 5% of the pocket money. How much pocket money did Ishaan have, in rupees?
  22. 22.Dev spent ₹21, which is 20% of the pocket money. How much pocket money did Dev have, in rupees?
  23. 23.Meera spent ₹14, which is 20% of the pocket money. How much pocket money did Meera have, in rupees?
  24. 24.Dev spent ₹72, which is 75% of the pocket money. How much pocket money did Dev have, in rupees?
  25. 25.Rohan spent ₹29, which is 20% of the pocket money. How much pocket money did Rohan have, in rupees?
  26. 26.27 is 30% of ?
  27. 27.Isha spent ₹12, which is 25% of the pocket money. How much pocket money did Isha have, in rupees?
  28. 28.Ishaan spent ₹15, which is 30% of the pocket money. How much pocket money did Ishaan have, in rupees?
  29. 29.50% of a number is 119. What is the number?
  30. 30.3 is 75% of ?
  31. 31.30% of a number is 12. What is the number?
  32. 32.10% of a number is 17. What is the number?
  33. 33.Riya spent ₹86, which is 25% of the pocket money. How much pocket money did Riya have, in rupees?
  34. 34.Riya spent ₹63, which is 50% of the pocket money. How much pocket money did Riya have, in rupees?
  35. 35.5 is 10% of ?
  36. 36.2 is 10% of ?
  37. 37.Riya spent ₹42, which is 15% of the pocket money. How much pocket money did Riya have, in rupees?
  38. 38.75% of a number is 21. What is the number?
  39. 39.40% of a number is 50. What is the number?
  40. 40.45 is 12% of ?

Answer key

  1. 300
  2. 244
  3. 60
  4. 140
  5. 360
  6. 240
  7. 136
  8. 370
  9. 140
  10. 300
  11. 280
  12. 100
  13. 140
  14. 284
  15. 20
  16. 252
  17. 370
  18. 375
  19. 20
  20. 324
  21. 240
  22. 105
  23. 70
  24. 96
  25. 145
  26. 90
  27. 48
  28. 50
  29. 238
  30. 4
  31. 40
  32. 170
  33. 344
  34. 126
  35. 50
  36. 20
  37. 280
  38. 28
  39. 125
  40. 375

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